Why can you increase the QoS of the network by increasing the link bandwidth capacity? (Multiple choice)

Why can you increase the QoS of the network by increasing the link bandwidth capacity? (Multiple choice)
A . The increase in link bandwidth can support higher traffic.
B . The increase in link bandwidth means less latency and jitter.
C . The increase in link bandwidth reduces the chance of congestion, which reduces the amount of packet loss.
D . The increase in link bandwidth can increase the available bandwidth of the control protocol.

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Answer: ABCD