All of the answers listed support NSX.

Trick question if you ask me..I'm pretty sure all but the VM-50 & VM-700 support VMWare NSX?

"on VMware NSX, only the VM-100, VM-200, VM-300, VM-500, and VM-1000-HV firewalls are supported. The software package (.xva, .ova, or .vhdx file) that is used to deploy the VM-Series firewall is common across all models. For information, see VM-Series Deployments ."

https://www.paloaltonetworks.com/documentation/80/virtualization/virtualization/about-the-vm-series-firewall/vm-series-models