You are a Microsoft Teams administrator for your company.

The company creates a new Teams app named App1. A developer packages App1 as a ZIP file.

You need to ensure that App1 can be uploaded as a ZIP package to Teams.

Which Apps setting should you turn on?

A. Allow side loading of external apps

B. Allow external in Microsoft Teams
C. Enable default apps
D. Enable new external apps by default

References:
https://docs.microsoft.com/en-us/microsoftteams/admin-settings