The time period and the amplitude of a simple pendulum are 4 seconds and 0.20 meter respectively. If the displacement is 0.1 meter at time t=0, the equation on its displacement is represented by :-
A. `y=0.2sin(0.5pit)`
B. `y=0.1sin(0.5pit+(pi)/(6))`
C. `y=0.1sin(pit+(pi)/(6))`
D. `Y=0.2 sin(0.5pit+(pi)/(6))`
