A threatened to kill B if he does not sell his house to A. B out of fear signs the contract for selling his house to A. The court can held this sale as void on which of the following ground?

no consent

A threatened to kill B if he does not sell his house to A. B out of fear signs the contract for selling his house to A. Here, the consent of B is not free. B can later avoid the sale on the ground that he was compelled to agree to the sale and the consent given was not free consent