What Are Two Exceptions to the Rule Requiring Consideration

Multiple Choice

What are two exceptions to the rule requiring consideration?

A) A bilateral contract and a unilateral contract.
B) Promissory estoppel and an illusory contract.
C) A contract under seal and promissory estoppel.
D) A contract under seal and an illusory contract.
E) A contract under seal and a contract involving a liquidated debt.