Multiple Choice Question (MCQ)

Question: Calculate the change gears necessary to cut a thread of 7/16" lead on a lathe with a lead screw of 4TPI?
A. Driver 70T, Driven 40T
B. Driver 30T, Driven 40T
C. Driven 70T, Driver 40T
D. Driven 30T, Driver 40T
Correct Answer: Driver 70T, Driven 40T