Which command is used to concatenate all files beginning with the string ’emp’ and followed by a non-numeric characters ?

– by
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]
D. cat emp[a-z]