Examine this command SOL>ALTER TABLE ORDERS SHRINK SPACE COMPACT which two statements are true?

【多选题】
A Querics and DML statements ae allowed on ORDERs while the SHRINK is cxecuting
B Dependent indexes become UNUSABLEDependent indexes become UNUSABLE
C The SHRINK operation causes rows to be moved to empty space starting to ward the end of the ORDERs segment
D The SHRINK operation causes rows to be moved to cmpty space starting from the beginning of the ORDERs segment.
E Only queries are allowed on ORDERs while the SHRINK is executing
F The high-water mark(HWM)of ORDERs is adjusted

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