A user jack, using a bash shell, requests a directory listing as follows: 

Which three statements are correct? 

Answer options:

A. The pattern dir? will expand to dira dirb dirc.
B. The pattern dir*a will expand to diraa.
C. The pattern dir*a will expand to dira diraa.
D. The pattern dir*b? will expand to dirabc.
E. The pattern dir*b? will expand to dirb dirabc.

ACD

A: dir followed by a single letter. C: dir followed by any characters ending with a. D: dir followed by any characters, then character b, then one single character. only dirabc matches