Which four mandibular teeth are so aligned that when viewed from the occlusal, a straight line may be drawn bisecting the contact areas_____________?

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Which four mandibular teeth are so aligned that when viewed from the occlusal, a straight line may be drawn bisecting the contact areas_____________?

A. 5,6,7,8
B. 4,5,6,7
C. 3,4,5,6
D. 2.3.4.5