正解:C
"Box cameras are designed to be versatile and typically feature C or CS-mounts, allowing users to select from a range of lenses to suit their surveillance needs."
- Axis Communications Academy, Network Video Fundamentals, 2022
"A box camera uses interchangeable C or CS-mount lenses, offering flexibility in lens choice depending on the application."
- Axis Box Cameras Overview
References:
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 31)
Axis Box Cameras Product Overview