There is an ASP.NET Web site PassGuideWS.

There is an ASP.NET page PassGuidePage.aspx.
PassGuidePage.aspx has several validation controls.
When a user hits the submit button on the Page the input values need to be validated.
What action do you need to take? Select two.

A.
Add an event handler to the page event Load.

B.
Add an event handler to the page event PreLoad.

C.
Add an event handler to the page event PreInit.

D.
Add an event handler to the page event Refresh.

E.
Add an event handler to the page event Init.

F.
Use the Page.IsInValid Property.

G.
Use the Page.IsValid Property.