What are two differences between optical-fiber cabling and copper cabling? (Choose two.)

What are two differences between optical-fiber cabling and copper cabling? (Choose two.)
A . A BNC connector is used for fiber connections
B . The glass core component is encased in a cladding
C . The data can pass through the cladding
D . Light is transmitted through the core of the fiber
E . Fiber connects to physical interfaces using RJ-45 connections

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Answer: BD