Consider an Antique Auction Where Bidders Have Independent Private Values

Consider an antique auction where bidders have independent private values.There are two bidders, each of which perceives that valuations are uniformly distributed between $100 and $1000.One of the bidders is Sue, who knows her own valuation is $200.What is Sue's optimal bidding strategy in an English auction:

A) submit a bid of $150.
B) submit a bid of $200.
C) submit a bid that is less than $150.
D) yell "mine" when the bid reaches $150.