Distance measured along the circumference of pitch circle from a point on tooth to the corresponding point on adjacent tooth is known as$

Distance measured along the circumference of pitch circle from a point

1.	Distance measured along the circumference of pitch circle from a point on tooth to the corresponding point on adjacent tooth is known as$
A.	Circular pitch
B.	Diametral pitch
C.	Module
D.	Gear ratio
Answer» B. Diametral pitch