Octavio Receives from Pastry Dough, Inc

Multiple Choice

Octavio receives from Pastry Dough, Inc., its catalogue and a "person?alized" letter inviting Octavio to buy any item at the advertised price. This is

A) an offer because of the "person?alized" letter.
B) an offer because there is no room for price negotiation.
C) an offer only if Octavio previously bought items from Pastry Dough.
D) not an offer.