Which statement accurately represents the behavior of a user named user1 who performs actions on a Windows 10 Azure AD joined device, given a conditional access policy that requires users to sign in every 4 hours?
a) User1 will be required to sign in every 4 hours.
b) User1 can sign in at any time.
c) User1 can sign in every 6 hours.
d) User1 doesn't need to sign in at all.
