Which command is used to concatenate all files beginning with the string 'emp' and
followed by a non-numeric characters?
A. cat emp[!0-9]
B. more [emp][!0-9]
C. cat emp[x-z]
followed by a non-numeric characters?
A. cat emp[!0-9]
B. more [emp][!0-9]
C. cat emp[x-z]