Which of the Following General Statements About the Root of a Single

Which of the following general statements about the root of a single rooted tooth is correct?

A) From a facial or lingual view, an imaginary midline of the root has a slight distal inclination to an imaginary midline of the crown.
B) From a facial or lingual view, proximal surfaces diverge apically.
C) From an incisal/occlusal view, proximal surfaces diverge toward the lingual.
D) From an incisal view of a horizontal cervical cross-section, the shape is round in contour.