A web developer has implemented HTML5 optimizations into a legacy web application. One of the modifications the web developer made was the following client side optimization: localStorage.setItem(`session-cookie`, document.cookie); Which of the following should the security engineer recommend? 

Answer options:

A. SessionStorage should be used so authorized cookies expire after the session ends
B. Cookies should be marked as secure and HttpOnly
C. Cookies should be scoped to a relevant domain/path
D. Client-side cookies should be replaced by server-side mechanisms

C