<u>These are the types </u>:
1. Antivirus software : Detects and removes virus and malwares from computer system.
2.Disk defragmenter : Reduces the fragmented space in the disk.
3.Disk cleaner : Build to find and delete unwanted files to free the disk space.
Because the measurement is relative to the unit. For example:
A measurement is six. But could be 6 inches, 6 yards, 6 nm, 6 feet, six as a quantity, six packages, six items, etc.
So until you specify the unit, that number means nothing.
