Question

the displacement of a mass suspended on a spring is modeled by the function y=2 sin(3 pi t) where y is measured in inches and t in seconds. the amplitude, period, and frequency of the motion of the mass are given by
A. amplitude 2, period= 2/3, and frequency=3/2
B. amplitude 3, period= 2/3, and frequency=1/2
C. amplitude 3, period= 3/2, and frequency=2/3
D. amplitude 2, period= 1/3, and frequency=3