Tracey’s photograph of the lincoln memorial is hanging in the lincoln gallery. ashley is looking at it and tracey tells ashley, "sell it to you for $10,000." ashley says, "go pound sand, that’s too much for this photo shopped picture! " the next day, ashley reconsiders and goes to the gallery and tells tracey she’ll take it for $10,000. which is true at this point?

(a) tracey can tell ashley to "go pound sand" and that the price is now $25,000.
(b) ashley can’t force tracey to take the $10,000 because of the prior day’s revocation.
(c) if they can’t agree, a court would set the price at the fair market value of $5,000.
(d) ashley’s acceptance of the $10,000 offer is effective only if tracey has not yet revoked his offer.