Which statement most accurately describes third party beneficiary rights?

Select one:

a$.$ Incidental beneficiaries have enforceable rights against both contracting parties.

b$.$ A beneficiary may enforce a contract if the parties intended to benefit him and if enforcing the promise will satisfy a duty of the promisee to the beneficiary.

C$.$ If a promisee intended to make a gift to the beneficiary, the beneficiary may not enforce the contract.

d$.$ An intended third party beneficiary has no enforceable rights in a contract.