外接圆半径为 2\sqrt{2}2 的 △ABC\bigtriangleup {ABC}△ABC 满足 2sinA+3cosBcosC=42\sin A + 3\cos B\cos C = 42sinA+3cosBcosC=4 ,则下列选项正确的是( )A. B=CB = CB=CB. A=5π12A = \frac{5\pi }{12}A=125πC. △ABC\bigtriangleup {ABC}△ABC 的面积是 1625\frac{16}{25}2516D. △ABC\bigtriangleup {ABC}△ABC 的周长是 425\frac{4\sqrt{2}}{5}542