All of the Following Are True About Instrument Shanks Except

Multiple Choice

All of the following are true about instrument shanks except which one?

A) Instrument shanks vary in diameter,curvature,and length.
B) Shanks with many deviations are used in treatment areas with restricted access such as posterior areas of the mouth.
C) Short functional shanks are used to reach tooth surfaces that are hard to access.
D) The length of the shank is measured from the first bend and away from the handles to the beginning of the working end.