Single sign-on systems have a main strength and a main weakness. Choose the bestanswer exposing this strength and weakness.

A.
Users do not need to remember multiple passwords, but access to many systems canbe obtained by cracking only one password, making it less secure.

B.
They allow the user to make use of very simple passwords; it puts undue burdenon IT to administer the system.

C.
They force the user to make use of stronger passwords; it makes it easier forusers but encourages little attention to security policies.

D.
They remove the burden of remembering multiple passwords from users; users needto type the same password when confronted with authentication requests for differentresources.

Explanation:
Users do not need to remember multiple passwords, but access to many systems can beobtained by cracking only one password, making it less secure. If an attacker wasable to uncover one credential set, he would have access to every resource withinthe environment that the compromised account has access to. This is certainly true,but one of the goals is that if a user only has to remember one password, and notten, then a more robust password policy can be enforced. If the user has just onepassword to remember, then it can be more complicated and secure because he does nothave nine other ones to remember also.