下面代码的输出结果是( )
Def exchange(a,b):

下面代码的输出结果是( )
Def exchange(a,b):
A,b =
B,a
return (a,b)
X = 10
Y = 20
X,y = exchange(x,y)
Print(x,y)

A.20 10

B.20 20

C.20,10

D.10 10

正确答案是A