在E盘当前目录文件夹下建立一个名为“Student.txt”的随机文件，要求用InputBox函数输入5个学生的姓名(StuName)、年级(StuGrade)和年龄(StuAge)。在程序中有以下记录类型和窗体的事件过程，请选择正确的语句完成程序( )。 Private Type student StuName As String * 10 StuGrade As String * 10 StuAge As Integer End Type Private Sub Form_Click() Dim s As student Open "c:/student.txt" For Random As #1 Len = Len(s) For i = 1 To 1 s.StuName = InputBox("请输入姓名") s.StuGrade = InputBox("请输入年级号") s.StuAge = Val(InputBox("请输入年龄")) Next i Close #1 End Sub

A．Print #1,s

B．Print #1,i

C．Put #1,,s

D．Put #1,,i