ABC Company makes daily incremental backups Monday - Friday at 3:00 am each night. Company makes full backup weekly, on Saturdays at 1:00 pm.

- recovery time objective = 2 hours

- time to make full backup = 3 hours

- time to restore from full backup = 1 hour

- time to make incremental daily backup = 1 hour

- time to restore each incremental daily backup = 15 minutes.

Required: If a disaster hits ABC Company at 5 am on Thursday, how many hours are needed to restore the information system?

a. 2 hours b. 1.5 hours c. 1.75 hours d. 2.25 hours