Fast Oxidative Glycolytic Fibers in Skeletal Muscle Are Used

Fast oxidative glycolytic fibers in skeletal muscle are used

A) only for motions requiring maximum power output, such as jumping.
B) constantly, for postural activities such as standing and sitting.
C) intermittently, for activities requiring more force output than the fast glycolytic fibers alone can produce.
D) intermittently, for activities requiring more force output than the slow oxidative fibers alone can produce.