You created a custom ASPX page that updates a list. The page is deployed to the Jayouts folder.
The page contains the following code segment. 01 < form id=” Forml” runat =” Server” > 02 < asp:
Button id=” btnUpdate ” runat =” server” Text=” Update” ></asp : Button > 03 </form > A user
attempts to update the list by using the page and receives the following error message: “The
security validation for this page is invalid”. You need to prevent the error from occurring. Which
control should you include in Form1?

A.
UlVersionedContent

B.
FormDigest

C.
EncodedLiteral

D.
inputFormCustomValidator