$($contract$)$ Ben puts a knife near Andy$$s throat in a smoky room. Ben asks Andy to sign a contract selling all your land properties to him. Ben laughed, $$if you don$$t sign the contract, you will not be able to walk out of the room.$$ As Ben was very happy after Andy had signed the contract, he ran home and told his mom. Ben$$s mom is a housewife. She said that, $$the court will not enforce your contract and you will not get Andy$$s properties.$$Is Ben$$s mom right? Why?