为自己加油

设Ω是由圆锥面z²=3x²+3y²(z≥0)及球面x²+y²+z²=a²(z≥0)所围的区域，用球面坐标计算三重积分I=∫∫∫_Ωsin(x²++y²+z²)dυ，则下列结论错误的是()

A.I=∫0π/3dφ∫02πdθ∫0ar2sinr2sinφdr;
B.I=∫0π/6dφ∫02πdθ∫0ar2sinr2sinφdr;
C.I=2∫0π/6dφ∫0πdθ∫0ar2sinr2sinφdr;
D.I=4∫0π/6dφ∫0π/2dθ∫0ar2sinr2sinφdr;