The voltage (V )produced by an alternating current generator is V(t)=229sin (120πt). What are the amplitude and period of V(t)?
A. amplitude: 114.5 period: 1/60
B. amplitude: 229 period: 1/60
C. amplitude: 229 period: 120π
D. amplitude: 229 period: 60
E. amplitude: 458 period: 1/60