You Have a New Hard Disk That You Want to Put

You have a new hard disk that you want to put two different OSs on but each OS requires a different file system. What procedure must you perform before you can install the two OSs?

A) Format the disk with the file system of the first OS; install the first OS and then reformat with the file system of the second OS.
B) Install the first OS and then create a new folder off the root to install the second OS.
C) This is not possible; you need a second physical hard disk.
D) Partition the disk into two volumes and format and install an OS on each volume.