当 x∈[0,2π]x \in \left\lbrack {0,{2\pi }}\right\rbrackx∈[0,2π] 时,曲线 y=sinxy = \sin xy=sinx 与 y=2sin(3x−π6)y = 2\sin \left( {{3x} - \frac{\pi }{6}}\right)y=2sin(3x−6π) 的交点个数为（ ）A. 3B. 4C. 6D. 8