A discrete time signal is as given below\(X [n] = cos (\frac{πn}{2}) – sin (\frac{πn}{8}) + 3 cos (\frac{πn}{4} + \frac{π}{3})\) The period of the signal X [n] is _____________

• A. 16
• B. 4
• C. 2
• D. Non-periodic