If_nominal_diameter_of_screw_thread=50mm_and_pitch=10mm_then_the_mean_diameter_of_the_screw_thread_will_be?$

If_nominal_diameter_of_screw_thread=50mm_and_pitch=10mm_then_the_mean_

1.	If_nominal_diameter_of_screw_thread=50mm_and_pitch=10mm_then_the_mean_diameter_of_the_screw_thread_will_be?$
A.	40mm
B.	45mm
C.	60mm
D.	55mm
Answer» C. 60mm