You must increase the scanning capacity of a FortiSandbox device by increasing the number of...

From the Scanning and Rating Components lesson, the Study Guide states:

" The universal VM license is a single license that grants you access to multiple VMs. Provides a scalable and cost-effective solution with up to 200 VMs on a single unit. Clone count limits shown on the VM Settings view apply to all enabled VM Types. "

" When you enable Adaptive Scan, FortiSandbox dynamically adjusts the number of clones of any local VMs you have enabled. Enabling this option does not affect the number of remote Mac OS or Windows cloud VMs. "

This confirms:

Option A — Deploying remote WindowsCloudVM and MACOSX clones expands capacity beyond local clone limits since remote VMs are not subject to local clone restrictions

Option D — Adding VM licenses directly increases the number of available VMs up to 200 on a single unit

Reorganizing the scan priority list (B) only affects scan order, not capacity. Adding custom VMs (C) would still be subject to the same local clone limits.