An administrator must deploy a new VCF instance in a dark site (no Internet).

The VCF 9.0 Installation Guide describes the VCF Download Tool for dark sites:

“For environments without Internet access, use the VCF Download Tool on a connected machine to download required bundles and transfer them to the air-gapped VCF environment.”

Broadcom Downloads (B) is the source but not the workflow for dark sites. The VCF Installer (C) consumes binaries but does not fetch them. SDDC Manager (D) manages bundles in connected mode but cannot download in disconnected environments.

Thus, the correct method for dark sites is A. Use the VCF Download Tool.