Peter signs a contract with Paul. The terms of the contract are as follows: $"$It Peter kills Mary, Paul will pay Peter $$100\mathrm{.}00.$

Peter never goes through with the plan, and Paul sues for the $$100\mathrm{.}00.$

Will Paul be successful in court?

Select one:

a$.$ No$,$ it is a voidable contract.

b$.$ No$,$ it is an executory contract only.

c$.$ No$,$ it is a void agreement.

d$.$ Yes, it is a valid contract.