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Assertion: On stimulation, a muscle cell releases calcium ions (Ca2+) from sarcoplasmicreticulum.
Reason: By reacting with a protein complex, Ca2+ uncover active sites on the actin filaments
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
