What Is the Correct Order of Events in Muscle Contraction

What is the correct order of events in muscle contraction?

A) action potential → synaptic cleft → sarcoplasmic reticulum → sarcolemma → calcium ions bind to troponin
B) action potential → synaptic cleft → sarcolemma → sarcoplasmic reticulum → calcium ions bind to troponin
C) action potential → sarcoplasmic reticulum → synaptic cleft → sarcolemma → calcium ions bind to troponin
D) action potential→ sarcolemma → sarcoplasmic reticulum → synaptic cleft → calcium ions bind to troponin
E) action potential → sarcolemma → synaptic cleft → sarcoplasmic reticulum → calcium ions bind to troponin