Under the UCC,if an Offer Is Received by Mail,the Acceptance

Under the UCC,if an offer is received by mail,the acceptance:

A) must also be made by mail
B) can be made by other means,but only if the offer so states
C) is effective only once it is received by the offeror
D) can be canceled by the offeree at any time during the period of a firm offer
E) can be made in any commercially reasonable manner