单项选择题

在窗体上画一个命令按钮,然后编写下列程序:  Private Sub Command1 click( )    Dim a As Single,b As Single    a=6:b=2    RC a,b    Print a,b  End Sub  Sub RC(x As Single,y As Single)    i=x    x=i/y    y=i Mod y  End Sub

A.4 3
B.1 1
C.3 0
D.2 6