You decide to quit your job. Your employer refuses to pay you the final paycheck you had already earned, unless you sign an agreement not to sue. You sign it and the once you get your paycheck, you sue. They sue you back for breach of the agreement not to sue. Your best defense is:

Group of answer choices

My promise not to sue you failed for lack of return consideration from you to me because you had a pre$-$existing duty to give me that paycheck since it was already earned $-$ pre$-$existing duty rule.

I lied$-$ get over it$.$