Match the lettered words or phrases with its corresponding numbered word or phrase. Place a letter on the blank next to the correct number:

A] promissory estoppel 1) avoid unjust enrichment______

B] void ab initio 2) extinguishes prior offer______

C] without reserve 3) counteroffer______

D] unilateral contract 4) justifiable detrimental reliance______

E] quasi-contract 5) from the start_________

F] counteroffer 6) agreement_____B_______

G] covenant 7) promise for a promise_________

H] bilateral contract 8) pertaining to dispatch________

I] consideration 9) the offer is the bid___________

J] option contract 10) UCC_______

K] promisee 11) modern law________

L] mailbox rule 12) ambiguity___________

M] executory contract 13) of value for value_______

N] violate mirror image rule 14) expired?______________

O] gap filling rules 15) expired________________

P] output contract 16) in the offeree__________

Q] bilateral mistake 17) "not sale to anyone else"______

R] UCC 18) more to satisfy_______

S] lapse of time 19) accepts promise________

T] rejection 20) "is in the doing"_________