以下程序的运行结果________。include using namespace std;func（）;cout< A.10,20
B.10,10
C.20,10
D.20,20

A.x=2500, y=400, z=1000
B.x=50, y=20, z=0
C.x=1000, y=400, z=1000
D.x=1000, y=20, z=0