ECCouncil Exam Questions

what does the bold letter string indicate?

In the example of a /etc/password file below, what does the bold letter string indicate?
nomad:HrLNrZ3VS3TF2:501:100: Simple Nomad:/home/nomad:/bin/bash

A.
Maximum number of days the password is valid

B.
Group number

C.
GECOS information

D.
User number