1. An offeree's silence and inaction is not recognized as acceptance unless:
a. an offeree takes benefit of offered services with reasonable opportunity to reject them and reason to know that they were offered with the expecation of compensation.
b. the offeror has stated or given the offeree reason to understand that assent may be manifest by silence
c. because of previous dealings, it is reasonable that the offeree should notify the offeror if he does not intent to accept.