Which of the following is true regarding the action potential of skeletal muscle?
A.
It spreads inward to all parts of the muscle via the T-tubules
B.
It has a prolonged plateau phase
C.
It causes the immediate uptake of Ca2+ into the lateral sacs of the sarcoplasmic reticulum
D.
It is longer than the action potential of cardiac muscle
E.
It is not essential for contraction