A：$k=\frac{1}{2}$,$\omega =\frac{1}{2}$,$\phi =\frac{\pi }{6}$

B：$k=\frac{1}{2}$,$\omega =\frac{1}{2}$,$\phi =\frac{\pi }{3}$

C：$k=-\frac{1}{2},$$\omega =2$,$\phi =\frac{\pi }{6}$

D：$k=-2$,$\omega =2$,$\phi =\frac{\pi }{3}$