You want to search the file myfile for all occurances of string containing at least five characters, where character number 2 and 5 are ‘a’ and character number 3 is
NOT ‘b’. Which command would you use?
A.
grep a*^b*a myfile
B.
grep .a[^b].a myfile
C.
grep .[a].*.[a] myfile
D.
grep .a*^b..a myfile