All of the Following Statements with Respect to the Speed

All of the following statements with respect to the speed sensors are true except:

A) They are variable reluctor sensors that produce an AC sine wave that can be interpreted by the transmission control module.
B) Most gas engines use the engine speed sensor.
C) The turbine speed sensor senses speed from the PTO gear mounted on the C1/C2 clutch housing.
D) The NSBU switch will prevent the truck from starting in any gear except park or neutral.