A seller has listed a home with a broker for $112,000. The seller is leaving for a 45-day cruise midway through the listing period, and authorizes the broker through a limited power of attorney to accept any offer of all cash at a price of $108,000 or more pending his return. The broker receives an offer for $110,000 all cash. The broker

a. must forward the offer to the seller's attorney for consideration

b. may not accept the offer until the seller returns

c. may sign a deed of conveyance if the seller does not return on time.

d. may accept the offer