What are the six subsystems of a structured cabling system as defined by ANSI/TIA-568-C.1?
a) Horizontal cabling, backbone cabling, equipment room, telecommunications room, work area, and entrance facility
b) Fiber optic cabling, coaxial cabling, vertical cabling, horizontal cabling, telecommunication outlets, and patch panels
c) Data center cabling, wireless networking, fire alarm systems, CCTV, access control, and HVAC
d) Local area network, wide area network, power distribution, cooling systems, security systems, and fire suppression systems