(i) The claim for quantum merit may arise if a contract performed by one party has become discharged by breach of the other party. The meaning of the phrase quantum merit is as much as earned. The claim is not for the original contract that has been discharged or void, but on an implied promise by the other party to pay for what he has done. The court may order injunction in the following cases
(a) if the contract is voidable.
(b) if the contract becomes void or
(c) on discovering the contract as void.
(ii) Injunction is an order passed by a competent court restraining a person from doing some act. An injunction can be defined as a mode of securing the specific performance of the negative terms of a contract. Negative terms of the contract imply doing something, which a party has promised not to do. The injunction is an order which is granted by the court restraining the person to do what he had promised not to do.

There are various types of remedies for the injured parties listed as follows.
(i) Recission of Contract
(ii) Claim for Specific Performance
(iii) Claim for Injunction
(iv) Claim for Quantum Merit and
(v) Claim for Damages

The court may order injunction in the following cases:
1. If the contract is voidable
2. If the contract becomes void or
3. On discovering the contract as void.

1. When the act agreed to be done is such that compensation in money for its non-performance is not sufficient. 
2. When it is probable that compensation in money cannot be received for the non- performance of the act agreed to be done.
3. When there is no standard for ascertaining the actual damage caused by the non-performance of the act agreed to be done.

In the aforesaid circumstances, A shall be entitled in two-way remedy.
(i) Right of rescission,
(ii) Right to claim damages.
(1) Since, as per facts, A willfully abstained herself. B shall be within his right to rescind the contract.
(2) In such circumstances, section 75 of the Indian Contract Act, 1872, provides that a person who rightfully rescind a contract' is entitled to a compensation for any damage which he has sustained for non-fulfilment of the contract.
(3) B, shall, therefore, be entitled, not only to do away with the services of A but also to claim compensation for the damages which he has sustained through the non-fulfilment of the contract.