The water chariot He Bo rides is driven by _____dragons，_____inside，_____outside。This accords with the ceremonial system of the Zhou Dynasty:__________。                                             
Which of the following combination is correct？
A、six，two horned，four hornless，The emperor's wagon should have six horses as the driver, while the princes' and ministers' should only have four
B、four，two horned，two hornless，The emperor's wagon should have six horses as the driver, while the princes' and ministers' should only have four
C、eight，four horned，four hornless，The emperor's wagon should have eight horses as the driver, while the princes' and ministers' should only have six
D、six, four horned, two hornless, The emperor's wagon should have eight horses as the driver, while the princes' and ministers' should only have six