Users report that they are able to sign-in to the system only during their normal working hours.
When they try to sign-in outside their normal working hours, they receive an error message that
states that the user profile cannot sign on.
What is the most likely reason for this issue?

A.
The System Value QINACTITV is set to 500.

B.
The System Value QRMTSIGN is set to *FRCSIGNON.

C.
An Activation schedule is assigned to the user profiles.

D.
An Expiration schedule is assigned to the user profiles

Explanation: