Refer to the exhibit. Asymmetric broadband service with significantly greater downstream bandwidth is recommended for Teleworker deployment. Which reason is the most accurate?（）
- AMost ISPs do not provide QoS for residential broadband. Asymmetric bandwidth reduces the chance of downstream congestion when traffic from Internet sites competes for bandwidth with IP voice traffic.
- BAdditional downstream bandwidth compensates for insufficient upstream bandwidth. The aggregate bandwidth provides the same result.
- CThe additional bandwidth is needed to access more than one site. Most HTTP traffic is downstream.
- DThe additional downstream bandwidth allows the Enterprise VPN device to send the IP voice packets much faster, allowing them to reach the Teleworker network with less latency.