Help with Dental Anatomy Question!!

[iflossdaily2009]

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Which of the following describes the proximal contact relationship between a maxillary central incisor and a maxillary lateral incisor?

A. Contact is offset to the lingual
B. Contact is centered incisocervically
C. Lingual embrasure is larger than the facial embrasure
D. Incisal embrausre is the largest of the embrasures

The answer is C, which I can understand. But why can't the answer be B? I think I am not understanding what they mean by incisocervically...PLEASE HELP.

 

[njsmahal]

they mean the contact between the two teeth is in between but the contact on LI is incisally so this cant be the answer

 

[shuntyman]

Answer C means the angle between the distal of max CI and mesial of the max LI on the lingual side is greater on the lingual than on the facial........ the amount of space between the sides of CI and LI on the lingual side 　ｇｒｅａｔｅｒ　 　ｔｈａｎ　 facial.