In the context of AWS IAM, identify a true statement about user passwords (login profiles).

A.
They must contain Unicode characters.

B.
They can contain any Basic Latin (ASCII) characters.

C.
They must begin and end with a forward slash (/).

D.
They cannot contain Basic Latin (ASCII) characters.

Explanation:
The user passwords (login profiles) of IAM users can contain any Basic Latin (ASCII) characters.
http://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.html