Under Both the UCC and the Common Law,the Acceptance Cannot

Under both the UCC and the common law,the acceptance cannot materially vary from the offer:

A) only in the sale of real estate and services.
B) only in sale of goods when the contract is made by the exchange of forms.
C) in the sale of real estate,services,and in sale of goods when forms are not exchanged.
D) when silence is the mode of acceptance.