What is the limitation of using a URL list and application control on the same firewall policy, in NGFW policy-based mode?

What is the limitation of using a URL list and application control on the same firewall policy, in NGFW policy-based mode?

A. It limits the scanning of application traffic to use parent signatures only. B. It limits the scanning of application traffic to the browser-based technology category only. C. It limits the scanning of application traffic to the DNS protocol only. D. It limits the scanning of application traffic to the application category only.