Selma wants to buy Matilda's house. Selma has been admiring the house for a long time and has asked Matilda repeatedly to sell the house to her, but Matilda has always refused. Finally, Selma tells Matilda that if Matilda does not sell Selma the house, Selma will kill Matilda's daughter. Afraid for her daughter's life, Matilda signs the contract to sell the house to Selma. If Matilda later tries to rescind the contract: Matilda may rescind the contract on the grounds of undue influence. Matilda may rescind the contract on the grounds that she signed the contract under duress. Matilda may rescind the contract on the grounds of unconscionability. Matilda may not rescind the contract because it has all the elements of a valid contract