A:如果,则
B:如果,则
C:如果,则
D:如果,则
---The beef in this restaurant tastes nice.
--- You can't find better beef in any other restaurant.
已知四棱锥P-ABCD的三视图如下图所示,则四棱锥P-ABCD的四个侧面中的最大的面积是( )