Unix - Engineering

Q1:

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]

E None of the above

ANS:A - cat emp[!0-9]

Cat emp[!0-9] in this case we have not 0 to 9 or a combination of no. are not allowed.
Cat emp[a-z] in this case only we can able to write the lower case and also 0-9 no. So this is wrong as well for all.

So, option A is correct according to me.