Relaxation of skeletal muscle after contraction requires:

A)Ca⁺⁺ release by the ryanodine receptor.
B)Ca⁺⁺ uptake by sarcoplasmic endoplasmic reticulum calcium-adenosine triphosphatase (SERCA).
C)Ca⁺⁺ efflux by the plasmalemmal Ca⁺⁺ pump.
D)Dephosphorylation of a myosin light chain.
E)Activation of Rho kinase.