Match the Given Function to Its Graph $y = - 3 \sin \left( \frac { \pi } { 3 } x \right)$

Match the given function to its graph.
-1) $y = - 3 \sin \left( \frac { \pi } { 3 } x \right)$
2) $y = - 3 \sin \left( \frac { 1 } { 3 } x \right)$
3) $y = - 3 \cos \left( \frac { \pi } { 3 } x \right)$
4) $y = - 3 \cos \left( \frac { 1 } { 3 } x \right)$

A) $1 \mathrm {~A} , 2 \mathrm { C } , 3 \mathrm { D } , 4 \mathrm {~B}$
B) $1 \mathrm { C } , 2 \mathrm {~A} , 3 \mathrm { D } , 4 \mathrm {~B}$
C) $1 \mathrm {~A} , 2 \mathrm { C } , 3 \mathrm {~B} , 4 \mathrm { D }$
D) $1 \mathrm {~B} , 2 \mathrm { D } , 3 \mathrm {~A} , 4 \mathrm { C }$

Correct Answer:

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