You need to ensure that, the next time HR department employees change their passwords, the passwords are required to have at least eight characters

A corporate network includes a single Active Directory Domain Services (AD D5) domain.
The HR department has a dedicated organization unit (OU) named HR. The HR OU has two
sub-OUs: HR Users and HR Computers. User accounts for the HR department reside in the
HR Users OU. Computer accounts for the HR department reside in the HR Computers OU.
All HR department employees belong to a security group named HR Employees. All HR
department computers belong to a security group named HR PCs.
Company policy requires that passwords are a minimum of six characters.

You need to ensure that, the next time HR department employees change their passwords,
the passwords are required to have at least eight characters. The password length
requirement should not change for employees of any other department.
What should you do?

A.
Create a fine-grained password policy and apply it to the HR Computers OU.
B.Modify the password policy in the GPO that is applied to the domain controllers OU.
C.Create a fine-grained password policy and apply it to the HR Employees group.
D.Modify the password policy in the GPO that is applied to the domain.