单项选择题

在窗体中有一个名为 Command1 的按钮，该模块内还有一个函数过程：Public Function f(x As Integer)As Integer Dim y As Integer x = 30 y = 3 f = x * yEnd FunctionPrivate Sub Command1_Click() Dim y As Integer Static x As Integer x = 10 y = 5 y = f(x) Debug.Print x; yEnd Sub打开窗体运行后，如果单击按钮，则在立即窗口上显示的内容是