$f(x)=\sin(x).$ The domain of this function is the set of all real numbers $R.$

Imagine the graph of function theConsider the three sets

- $A=\left\{ x\in \mathbb R|\sin(x)=-1 \right\}$
- $B=\left\{ x\in \mathbb R|\sin(x)=0 \right\}$
- $C=\left\{ x\in \mathbb R|\sin(x)=1 \right\}.$

Which of them has the largest cardinality?

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