Let M4 = I (where I denotes the identity matrix) and...

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Let M⁴ = $$I$$, (where $$I$$ denotes the identity matrix) and M ≠ $$I$$, M² ≠ $$I$$ and M³ ≠ $$I$$. Then, for any natural number k, M^-1 equals:

A. M^{4k + 1}

B. M^{4k + 2}

C. M^{4k + 3}

D. M^4k

Answer: Option C

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