The phase function of a discrete time signal x(n)=an, where a=r.ej‚�

1.	The phase function of a discrete time signal x(n)=aⁿ, where a=r.e^{j‚âà√≠‚Äö√†√®} is:$
A.	tan(n‚âà√≠‚Äö√†√®)
B.	n‚âà√≠‚Äö√†√®
C.	tan<sup>-1</sup>(n‚âà√≠‚Äö√†√®)
D.	None of the mentioned
Answer» C. tan<sup>-1</sup>(n‚âà√≠‚Äö√†√®)

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