All of the Following Are Correct Statements About Lifters EXCEPT

Multiple Choice

All of the following are correct statements about lifters EXCEPT:

A) Flat bottom (nonroller) lifters rotate in their bores
B) Roller lifters do not and should not rotate in their bores
C) The lobes on a camshaft designed for roller lifters may have a steeper ramp and a blunt nose
D) All engines equipped with roller lifters require periodic valve (lash) adjustment