please answer this question

Dave is a daredevil. He performs at conventions and circuses. Recently, he agreed to levitate 1 m above ground for 15 minutes in exchange for $10 000. Which of the following is the reason why this contract is void? O if there is evidence of Dave's mental disability, the contract is void. Of the price Dave has charged is inadequate to cover his expenses, the contract is void. O if performance on Dave's part is impossible, then his consideration is invalid. O if Dave can actually perform the stunt, then he can charge more than $10 000. Nothing is in writing, so the agreement is void