Which of the following best paraphrases the underlined sentence in paragraph 4?

Systemic hiring inequities can only be stopped if global auditing firms take full responsibility for monitoring software-as-a-service subscriptions.

The most powerful protection against systemic hiring bias is equipping HR staff with the knowledge required to rigorously question software vendors.

To completely prevent hiring inequities, companies must be taught to entirely reject all forms of commercial recruitment AI.

Cultivating algorithmic transparency is extremely difficult because most professionals are entirely indifferent to the deception of HR software.