When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a

When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m.,

1.	When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a
A.	slow speed engine
B.	medium speed steam engine
C.	high speed steam engine
D.	none of these
Answer» C. high speed steam engine