Refer to the drawing of a flyball-weight mechanical speed governor (see figure below).
In a flyball-weight mechanical speed governor, the purpose of the spring on the flyball mechanism is to __________ centrifugal force by driving the flyballs __________.
A. counteract; outward
B. aid; inward
C. counteract; inward
D. aid; outward
Share your understanding of this question with the correct explanation.