73. According to the latest NIST (National Institute of Standards and Technology), users should focus on password’s length, as opposed to its complexity. Actually, NIST discourage users to use passwords which mix numbers, capitalization and special characters. Which one of the following is NOT the reason why NIST makes this recommendation？ (A)Complex memorized secrets are less likely to be memorable (B)Increasing length can improve the password entropy more than increasing complexity (C)If users need to follow the password complexity guideline, users’ password choices may be very predictable (D)Considering the IoT era, some devices cannot provide an input device large enough to contain all special characters