Universal Container has Unlimited and Performance Edition Salesforce Org. How many Salesforce Dynamic dashboards can the organization have?

Answer options:

A.5
B.10
C.3
D.2

Correct Answer: B 
Unlimited and Performance editions have a limit of 10 dynamic dashboards. 
Option A is incorrect because Enterprise Edition has a limit of 5 dynamic dashboards. 
Option C is incorrect because Developer Edition has a limit of 3 dynamic dashboards. 
Reference: 

https://help.salesforce.com/articleView?id=dashboards_dynamic_overview.htm&type=5