已知int x = 30, y = 50, z = 80; 以下语句执行后变量x、y、z的值分别为:( )。
int x = 30, y = 50, z = 80;
if (x > y || x < z && y > z) z = x; x = y; y = z;
(A)x = 50, y = 80, z = 80
(B)x = 50, y = 30, z = 30
(C)x = 30, y = 50, z = 80
(D)x = 80, y = 30, z = 50
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