In an auction, acceptance generally occurs when

Select one:

a$.$ the auctioneer mails confirmation of the auction results via certified mail to the highest bidder

b$.$ the auctioneer mails confirmation of the auction results via certified mail to the highest bidder, and the highest bidder confirms via a comparable return mailing that he or she intends to purchase the auctioned item

c$.$ the auctioneer initiates the bidding process

d$.$ the auctioneer declares the item sold