In Muscle,glycogen Phosphorylase Kinase Can Be Activated by Nerve Stimulation

Multiple Choice

In muscle,glycogen phosphorylase kinase can be activated by nerve stimulation even in the absence of hormonal signals.Nerve stimulation alone results in activation of glycogen phosphorylase kinase as a result of:

A) elevated cytosolic Ca²⁺.
B) phosphorylation by cAMP dependent PKA.
C) both of the above
D) none of the above