请问这道题是选b还是d呢?谢谢解答
Which of the following is true about the COMPRESS=YES data set option?
A.It uses the Ross Data Compression method
to compress numeric data.
B.It is most effective with character data
that contains repeated characters.
C.It is most effective with numeric data that
represents large numeric values.
D.It is most effective with character data that
contains patterns, rather than simple repetitions.