What prevents the Smart Detection notification from being sent?

You configure Azure Application Insights and the shared service plan tier for a web app.

You enable Smart Detection.

You confirm that standard metrics are visible in the logs, but when you test a failure, you do not receive a Smart Detection notification

What prevents the Smart Detection notification from being sent?
A . You must restart the web app before Smart Detection is enabled.
B . Smart Detection uses the first 24 hours to establish the normal behavior of the web app.
C . You must enable the Snapshot Debugger for the web app.
D . The web app is configured to use the shared service plan tier.

Answer: B