Which of the following is (are) not part of the Principal of Easiest Penetration
O Any means of penetration of a system may be used by an attacker
O Attempts to penetrate a system may not be by the most obvious means
O Penetration attempts will always be made through windows rather than doors.
O Penetration of a system may not be attempted against the area that has the strongest defense
O Penetration attempts will always come through the area that has the weakest defense.