High Density for IBM 720KB Disks

[Tech]

To my knowledge, 3.5" disks come in two density: double (DD) and high (HD). The FAT12 DD capacity is 720KB and the HD is 1.44MB. In the SCP software settings, there is an option to choose Low or High Density. There is also an option to choose Disk Type: IBM 720KB or IBM 1.44MB.

Should I choose Low density when choosing IBM 720KB type? What if I make an image for a 720KB disk with read Density set to High?

Thank you.