Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control

Where D.C. motor of H.P. 12 or more requires frequent starting, stoppi

1.	Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control
A.	rum type controller is used
B.	hree point starter is used
C.	our point starter is used
D.	ll above can be used
Answer» B. hree point starter is used