Which of the following is true about input validation in a client-server architecture, when data integrity is critical to the organization?

Which of the following is true about input validation in a client-server architecture, when data
integrity is critical to the organization?

A.
It should be enforced on the client side only.

B.
It must be protected by SSL encryption.

C.
It must rely on the user’s knowledge of the application.

D.
It should be performed on the server side.

Explanation: