A simple harmonic motion is represented by the equation y = 8 sin(πt/4) , where t is time in seconds. What are the amplitude and time period of the simple harmonic motion?
a) 16 cm, 0.2 s
b) 2 cm, 0.4 s
c) 16 cm, 0.4 s
d) 32 cm, 0.4 s