​The Optimal Bidding Strategy for an Oral Auction Is

​The optimal bidding strategy for an oral auction is

A) ​To shade your bid below your true value and drop out well before it is reached
B) To shade your bid below your true value and drop out just when the shaded amount is reached
C) To drop out when the bidding exceeds your true value
D) ​To size up your competition to determine how much to shade your bid