Which of the following statements are correct? (M) (BC401 79p test)

A.      As far as possible, when you use key access, the runtime system always chooses the fastest possible variant, depending on the table kind.

B.      Hashed tables should not be used if you need to make many changes when you are accessing data. 

C.      You can save lots of runtime by using field symbols and references, especially with nested internal tables.

D.      Binary searching is possible for standard tables. // sorted table에서 가능

E.    The fastest form of access in loop processing is usually through the row number.

위의 문제에서 A 문장이 맞는 문장인지 궁금합니다.

제생각에는 D만 잘못된 문장같은데요..좀 헷갈리네요.