If $3sin\theta + 5cos\theta$ = 5, then $5sin\theta - 3cos\theta$ is equal to

If $3sin\theta + 5cos\theta$ = 5, then $5sin\theta - 3cos\theta$ is equal to
1). $\pm 3$
2). $\pm 5$
3). 1
4). $\pm 2$

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