Which of the Following Statements About Excitation- Contraction Coupling in Skeletal

Which of the following statements about excitation- contraction coupling in skeletal muscle is FALSE?

A) An end- plate potential triggers an action potential on the sarcolemma.
B) DHP receptors on the T tubules detect changes in voltage and communicate to ryanodine receptors on the sarcoplasmic reticulum to open calcium channels.
C) Calcium binds to troponin, causing a shift in tropomyosin, thereby exposing the binding sites on actin for myosin.
D) Calcium ATPases in the sarcoplasmic reticulum are necessary for relaxation of the muscle.
E) An action potential in the sarcolemma stimulates the opening of voltage- gated calcium channels in the plasma membrane and the sarcoplasmic reticulum.