You are designing a user input form that is part of an ASP.NET Web Forms application. You
need to ensure that users cannot attack the Web server by submitting invalid data. Which
approach should you recommend?

A.
Write an on Submit Java Script handler that validates all form input

B.
Write an on Submit JavaScript handler that URL-encodes all data that is passed to the
server.

C.
Install a certificate on the Web server, and force all Web traffic to use SSL.

D.
Write an On Click method for the Submit button that rejects form submissions that
contain invalid data