Q: how can i restore backup from a list of backups i.e October backup, November. I want to take October from itune.

From the Apple Support article. You will be able to select the backup that you want to use during this process.

Restore your device from an iCloud or iTunes backup - Apple Support

1. Connect your device to the computer that you stored your backup on.
2. Open iTunes. If iTunes tells you there's an iOS update, get the latest version.
3. Go to File > Devices > Restore from Backup. If you're using Windows and don’t see a File menu, press the Alt key.
4. Look at the date and size of each backup and pick the most relevant.
5. Click restore and wait for the process to finish. Your device will restart and then sync with your computer. Stay connected until the sync finishes.