——Did you watch _______ Women's 500-metre Fast Skating Final last night?——Yes, it was really _______ wonderful match.
A:a, a
B:the, a
C:a, the
D:the, the
一个圆锥的母线长是9,底面圆的半径是6,则这个圆锥的侧面积是 ____ 。(结果保留π)