Refer to the Exhibit. 
Within the exhibit, “Listing 1” displays the original files contents, and “Listing 2” is the result from
one of the following commands. Select the command that produced this output.
A.
grep [ak]sh$ userdata
B.
grep [akAK]sh userdata
C.
grep (a|k)sh userdata
D.
grep [^ak]sh$ userdata
E.
grep ash userdata ; grep ksh userdata
Explanation: