The displacement of a mass suspended on a spring is modeled by the function y=5sin(pi t) where y is measured in inches and t is measured in seconds. The amplitude, period, and frequency of the motion of the mass are given by:

(A). Amplitude = 5, Period = 1, and Frequency = 1
(B). Amplitude = 5, Period = 2, and Frequency = 1/2
(C). Amplitude = 5, Period = 1/2, and Frequency = 2
(D). Amplitude = 2, Period = 2, and Frequency = 2