A user has launched an EBS backed EC2 instance. What will be the difference while performing the restart or stop/start options on that instance?

A. For restart it does not charge for an extra hour, while every stop/start it will be charged as a separate hour
B. Every restart is charged by AWS as a separate hour, while multiple start/stop actions during a single hour will be counted as a single hour
C. For every restart or start/stop it will be charged as a separate hour
D. For restart it charges extra only once, while for every stop/start it will be charged as a separate hour