The following is an extract of a password file: Smith:*:1133:334:John Smith:/usr/people/jsmith:/bin/tcsh Which of the following is the purpose of the ??in Smith's password field?

The following is an extract of a password file:
Smith:*:1133:334:John Smith:/usr/people/jsmith:/bin/tcsh
Which of the following is the purpose of the ??in Smith's password field? 








A. It deactivates Smith's account.
B. It indicates that Smith is a superuser.
C. It forces Smith to change his password at his next login.
D. It indicates that Smith's home directory is shared by other members of his group.









Answer: A


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