On the basis of a major decline occurring within a few minutes of the close, trading is halted on all markets for the remainder of the trading day. Under the market wide circuit breaker (MWCB) rules, market-on-close (MOC) orders pending at the time trading is halted
A) should be held for execution on the following trading day
B) should be held for execution on the following trading day unless canceled by the customer
C) are converted to market orders and executed at the opening on the following trading day
D) must be canceled
Answer: D) must be canceled