Two men, who lived in different suburbs twenty miles apart, were golfing acquaintances at a country club. Both were traveling salesmen: one for a pharmaceutical house and one for a widget manufacturer. The drug salesman wrote the widget salesman by United States mail on Friday, October 8: I need a motorcycle for transportation to the country club, and will buy your Sujocki for $1,200 upon your bringing it to my home address above [stated in the letterhead] on or before noon, November 12 next. This offer is not subject to revocation. Sincerely, [signed] [the drug salesman]. The widget salesman replied by mail the following day: I accept your offer, and promise to deliver the bike as you specified. Sincerely, [signed] [the widget salesman]. This letter, although properly addressed, was misdirected by the postal service and not received by the drug salesman until November 10. The drug salesman had bought another Sujocki bike from a biker for $1,050 a few hours before. The biker saw the widget salesman at the country club on November 11 and said: "I sold my Sujocki to the drug salesman yesterday for $1,050. Would you consider selling me yours for $950?" The widget salesman replied: "I'll let you know in a few days." On November 12, the widget salesman took his Sujocki to the drug salesman's residence; he arrived at 11:15 a.m. the drug salesman was asleep and did not answer the widget salesman's doorbell rings until 12:15 p.m. The drug salesman then rejected the widget salesman's bike on the ground that he had already bought the biker's.

In the drug salesman's letter of October 8, what was the legal effect of the language: "This offer is not subject to revocation"?

Group of answer choices

A. Under the Uniform Commercial Code the offer was irrevocable until noon, November 12.

B. Such language prevented an effective acceptance by the widget salesman prior to noon, November 12.

C. At common law, such language created a binding option in the widget salesman's favor.

D. Such language did not affect the offeror's power of revocation of the offer.