下颌管走行规律是

A．在下颌支内，行向正下方

B．在下颌体内，该管行向前下

C．在下颌孔至下颌第一磨牙之间，距骨外板较内板近

D．在下颌孔至下颌第一磨牙之间，距下颌支前缘较后缘近

E．在下颌孔至下颌第一磨牙之间，距牙槽缘较下颌下缘为近

With respect to the Standards relating to preservation of confidentiality, which of the following statements is least accurate Members and candidates must keep information about all former current, and prospective clients confidential unless :（）

A. the information concerns illegal activities on the part of the clients.

B. disclosure is required by firms' policies.

C. the clients permit disclosure of the information.