A had offered B, a price of Rs.10, 00,000/- for B's flat. But B was not ready to sell the flat at all. A says to B that “I shall kill you if you don't agree to sell me your house for Rs.10, 00,000/-”. B thereafter did all that was the desire of A in order to save his life. What is the immediate answer?

This is a textbook case of coercion under Section 15 of the Indian Contract Act. Coercion involves threatening or committing an act forbidden by the Indian Penal Code (like threatening to kill someone) to force a person into a contract. Contracts induced by coercion are voidable at the option of the coerced party (B), not the coercer (A). A's threat to kill B's life constitutes criminal coercion, making the agreement voidable at B's option.