Cho phương trình: \(\cos (2x + \frac{\pi }{3}) = \sin (\frac{\pi }{3} - x)\).

A. \(T = \left\{ { - \frac{\pi }{6} + k2\pi ,k \in Z} \right\}\)

B. \(T = \left\{ {\frac{{7\pi }}{6} + k\frac{{2\pi }}{3},k \in Z} \right\}\)

C. \(T = \left\{ {\frac{\pi }{2} + k\frac{{2\pi }}{3},k \in Z} \right\}\)

D. \(T = \left\{ { - \frac{\pi }{6} + k\frac{{2\pi }}{3},k \in Z} \right\}\)