Find the Period and Amplitude $$y = \frac { 4 } { 5 } \sin 2 \pi x$$

Multiple Choice

Find the period and amplitude.​ $$y = \frac { 4 } { 5 } \sin 2 \pi x$$ ​

A) Period: 1;Amplitude: $\frac { 4 } { 5 }$
B) Period: π;Amplitude: $\frac { 5 } { 4 }$
C) Period: 2π;Amplitude: 1
D) Period: $\frac { \pi } { 2 }$ ;Amplitude: $\frac { 1 } { 5 }$
E) Period: π;Amplitude: 5