What is the difference between a session and a permanent cookie?

What is the difference between a session and a permanent cookie?

A.
Permanent cookies are stored in memory and session cookies are stored on the hard drive

B.
Session cookies are stored in memory and permanent cookies are stored on thehard drive

C.
Sensitive information should be held in permanent cookies, not session

D.
Session cookies are not erased when a computer is shut down

Explanation:
A cookie can be in the format of a text file stored on the user’s harddrive (permanent) or it can be only held in memory (session). If the cookie containsany type of sensitive information, then it should only be held in memory and beerased once the session has completed.