What is the possible representation of x(t) if xl(t)=a(t)e(j (t))? – McqOptions

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1.	What is the possible representation of x(t) if x_l(t)=a(t)e^{(j (t))}?
A.	x(t) = a(t) cos[2 F<sub>c</sub>t (t)]
B.	x(t) = a(t) cos[2 F<sub>c</sub>t + (t)]
C.	x(t) = a(t) sin[2 F<sub>c</sub>t + (t)]
D.	x(t) = a(t) sin[2 F<sub>c</sub>t (t)]
Answer» C. x(t) = a(t) sin[2 F<sub>c</sub>t + (t)]

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