If $\sin \left(5 x+\frac{\pi}{4}\right)=0$,then $x$ is equal to
- A$\frac{-\pi}{20}+\frac{\pi}{2} n, n \in \mathbb{Z}$
- B$\frac{\pi}{20}+\frac{\pi}{5} n, n \in \mathbb{Z}$
- C$\frac{-\pi}{5}+\frac{\pi}{5} n, n \in \mathbb{Z}$
- D$\frac{-\pi}{20}+\frac{\pi}{5} n, n \in \mathbb{Z}$
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