YoucreateaWebpagenamedTestPage.aspxandausercontrolnamedcontainedinafilenamedTestUserControl.ascx.YouneedtodynamicallyaddTestUserControl.ascxtoTestPage.aspx.Whichcodesegmentshouldyouuse?()

A.protectedvoidPage_Load（objectsender，EventArgse）{ControluserControl=Page.LoadControl（"TestUserControl.ascx"）；Page.Form.Controls.Add（userControl）；}

B.protectedvoidPage_Load（objectsender，EventArgse）{ControluserControl=Page.FindControl（"TestUserControl.ascx"）；Page.Form.Controls.Load（userControl）；}

C.protectedvoidPage_PreInit（objectsender，EventArgse）{ControluserControl=Page.LoadControl（"TestUserControl.ascx"）；Page.Form.Controls.Add（userControl）；}

D.protectedvoidPage_PreInit（objectsender，EventArgse）{ControluserControl=Page.FindControl（"TestUserControl.ascx"）；Page.Form.Controls.Load（userControl）；}