The Problem of Winner's Curse Can Be Avoided

The problem of winner's curse can be avoided:

A) if the scope of uncertainty increases among the bidders.
B) by increasing the number of bidders.
C) by increasing the range of actual estimates and bids.
D) if the buyer bids more aggressively in presence of more rivals.
E) if the buyer can assess the good's acquisition value by first discounting his/her original estimate.