A：$k\mathrm{\pi }-\frac{3\mathrm{\pi }}{8},\mathrm{k}\mathrm{\pi }+\frac{3\mathrm{\pi }}{8},\left(k\in Z\right)$

B：$k\mathrm{\pi }+\frac{\mathrm{\pi }}{8},\mathrm{k}\mathrm{\pi }+\frac{5\mathrm{\pi }}{8},\left(k\in Z\right)$

C：$k\mathrm{\pi }-\frac{\mathrm{\pi }}{8},\mathrm{k}\mathrm{\pi }+\frac{3\mathrm{\pi }}{8},\left(k\in Z\right)$

D：$k\mathrm{\pi }+\frac{3\mathrm{\pi }}{8},\mathrm{k}\mathrm{\pi }+\frac{7\mathrm{\pi }}{8},\left(k\in Z\right)$