窗体上有两个文本框Text1、Text2以及一个命令按钮Command1，编写下列程序： Dim y As Integer Private Sub Command1_Click() Dim x As Integer x=2 Text1.Text=p2(p1(x),y) Text2.Text=p1(x) End Sub Private Function p1(x As Integer) As Integer x=x+y:y=x+y p1=x+y End Function Private Function p2(x As Integer, y As Integer)As Integer p2=2*x+y End Function 当单击1次和单击2次命令按钮后，文本框Text1和Text2内的值分别为( )。
A．2 4 2 4
B．2 4 4 8
C．4 4 8 8
D．10 10 58 58