What is the significance of the change in membrane potential of the T tubules within the sarcolemma?

A) It has no role, because this phenomenon does not occur.
B) It triggers the sarcoplasmic reticulum to release of calcium ions.
C) This change is caused by the release of actin and myosin molecules.
D) This change is caused by the displacement of actin and myosin molecules.
E) None of the answers are correct.