Which of the following statements about the rack is INCORRECT?

A$)$ The rack was never used for judicial torture.

B$)$ In its earliest designs, the rack had to be operated by four strong executioners.

C$)$ The two$-$men designs that emerged later on required two executioners to use both their hands and feet.

D$)$ A dire need for secrecy was the motivation behind the efforts at reducing the number of executioners from four, to two, to one.