Which of the following services can auction administrators/market integrity specialists provide? Note: there are 3 correct answers to this question.

Which of the following services can auction administrators/market integrity specialists provide? Note: there are 3 correct answers to this question.
A . Actively monitor all events
B . Delete bids
C . Assist with test auctions
D . Extend and reduce timing
E . Surrogate bid

Answer: A, C, D