登录之后可查看解析

A is corrent because the option stated that it was given for $20 and other valuable consideration. Neither the $20 nor the other valuable consideration was present; therefore, the option is unenforceable because it lacks consideration.
B is incorrect because under common law, an irrevocable offer is only present when the offeree gives consideration to keep the offer open for a stated period of time. Consideration is not present; thus, the option contract is not enforceable.
C is incorrect because the acceptance, if sent by reasonable means of communication, would be effective when sent, not when received at Love’s place of business. Consequently, an acceptance sent by Nelson on the ninth day that did not arrive until the twelfth day would be effective if sent by reasonable means.
D is incorrect because to enforce the option against Love, Nelson would only need a writing signed by Love, the party to be charged.