Which one of the following is a threat related to the use of web-based client side input validation?

Which one of the following is a threat related to the use of web-based client side input validation?

A.
Users would be able to alter the input after validation has occurred

B.
The web server would not be able to validate the input after transmission

C.
The client system could receive invalid input from the web server

D.
The web server would not be able to receive invalid input from the client