[Carpet Woes] Joaquin Went Shopping at ABC Carpet

[Carpet Woes] Joaquin went shopping at ABC Carpet. He saw some carpet he liked but could not make up his mind. The manager at ABC Carpet wrote down the proposed purchase price for him along with a statement that the price would be good for three months. Two months later, Joaquin went back to ABC Carpet to purchase the carpet. Unfortunately, the price had gone up. Joaquin showed the manager his writing and guaranteed price, but the manager said that the offer was no longer good. Frustrated with ABC Carpet, Joaquin decided to purchase his carpet from XYZ Carpet, and he also contracted with XYZ to do the installation. Unfortunately, Joaquin almost immediately started to have problems with the carpet. Joaquin told the sales manager for XYZ Carpet that he was planning on bringing a suit for breach of warranty. The sales manager, however, told him that breach of warranty provisions only applied to sales of goods and that the carpet purchase was for installation, a service.
-Which of the following is true regarding the enforceability of the offer made by the manager at ABC Carpet?

A) ABC Carpet is not bound by the offer because Joaquin did not provide any consideration.
B) ABC Carpet is bound by the offer, but only for a period of seven days.
C) ABC Carpet is bound by the offer, but only for a period of ten days.
D) ABC Carpet is bound by the offer, but only if Joaquin can establish reliance.
E) ABC Carpet was bound by the offer.