In a contention$-$based MAC system, such as that used by Ethernet, what are the consequences of adding more nodes to the network? $($Select two.$)$

Works at $10$ Mbps $(10),$ uses a baseband signal $($BASE$),$ and runs over twisted pair copper cabling

Functions at $1$ Gbps $(1000),$ employs baseband signal transmission $($BASE$),$ and is implemented with coaxial

cabling

Operates at $100Mbps(100),$ uses broadband signal transmission $($BROAD$),$ and utilizes fiber optic cabling

I want to review this question later. $($Optional$)$

Check my answer $($Optional$)$Which of the following best describes $10$BASE$-$T network cabling?