A lends money to B on the condition that B will divorce C, and later get married to A. B does not divorce C, then A files a suit against B.
A cannot pursue legal proceedings against B to recover the money.
B has to pay money.
A can sue B for breach of contract.
It is valid contract.
A cannot pursue legal proceeding against B because,the basic premise of this contract is immoral so it will be deemed void. Hence correct option is A