a Seller'A'make offer to sell a

Dear Querist,

“Breach of contract" is a legal term that describes the violation of a contract or an agreement that occurs when one party fails to fulfill its promises according to the provisions of the agreement. Sometimes it involves interfering with the ability of another party to fulfill his duties. A contract can be breached in whole or in part. 

In the situation given above, it could be a counteroffer but the earlier offer was accepted hence the offer made after that won’t be applicable. B can sue A for the same.

Regards,

Palak