Users report call delay during Microsoft Teams audio conferences.

You run a network trace from a user’s device during an audio conference. You review the following trace results:

You need to identify the cause of delay.

What is the cause?

A. The source port for audio is above 50,000.

B. The source port range for audio is too narrow.

C. The UDP traffic is being limited.

D. The TLS traffic is being limited.

Reference:
https://docs.microsoft.com/en-us/MicrosoftTeams/quality-of-experience-review-guide#quality-investigations