Which of the following is true of permanent first molar’s occlusal surface_____________?

Which of the following is true of permanent first molar’s occlusal surface_____________?

A. Maxillary molar has 2 major fossa, 2 minor fossa, 4 triangular ridges,1 oblique ridge and 5 grooves
B. Mandibular molar has 1 major fossa, 2 minor fossa, 5 triangular ridges and 4 grooves
C. Rhomboidal shape in maxillary molars and hexagonal shape in Mandibular molars
D. All of the above

Which of the following is true for permanent teeth________________?

Which of the following is true for permanent teeth________________?

A. Maxillary roots are inclined distally where as Mandibular roots are inclined mesially
B. Maxillary molars are buccally inclined and Mandibular molars are inclined lingually
C. Buccal cusps of lower and lingual cusps of upper are the functional cusp
D. All of the above

In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________?

In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the_________________?

A. Line connecting mesial with distal is longest
B. Line connecting mesial with lingual is longest
C. Line connecting distal with lingual is longest
D. Angle at the mesio facial canal is obtuse