The "Master of the Offer

The "master of the offer"

A) can insist that silence will be treated as acceptance.
B) can change the terms of an offer after it has been accepted.
C) is a concept that occurs under a bilateral contract but not under a unilateral contract.
D) is a description of the offeree,who can either accept or reject an offer.
E) is always the same party that made and communicated the offer.