设在工程中定义了下列类型： Type Stutype ino As Integer strname As String*20 strsex As String*1 smark As Single End Type 在窗体上正确使用这个类型的是下列哪个操作( )。 A.Sub Command1_Click() Dim student As Stutype With student .ino=12 .Strname=smith .strsex=男 .smark=89 End With End Sub B.Sub Command1_Click() Dim Student As Stutype With student .ino=12 .strname='smith' .strsex='男' .smark=89 End With End Sub C.Sub Comnland1_Click() Dim student As Stutype With Stutype .ino=12 .strname='smith' .strsex='男' .smark=89 End With End Sub D.Sub Command1_Click() Dim student As Stutype With student .ino=12 .Strname='smith' .strsex='男' .smark=89 End student End Sub