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