Which of the Following Statement Is Correct

Multiple Choice

Which of the following statement is correct?

A) In any engine, 100% of the reciprocating masses can be balanced dynamically
B) In the case of balancing of multicylinder engine, the value of secondary force is higher than the value of the primary force
C) In the case of balancing of multimass rotating systems, dynamic balancing can be directly started without static balancing done to the system
D) none of the mentioned