What solution should be recommended?

A client has two datasets that are used across seven different dashboards. Three of these dashboards are used by marketing and four are used by sales. The client requires that only marketing can access the marketing dashboards and only sales can access the sales dashboards.

What solution should be recommended?
A . Create two custom apps: one for marketing dashboards with marketing as "viewer" and one for sales dashboards with sales as "viewer." Add the datasets as references to both custom apps.
B . Create three custom apps: one for marketing dashboards with marketing as "viewer," one for sales dashboards with sales as "viewer," and one for datasets where marketing and sales are "viewer."
C . Create one custom app for the datasets and share it with marketing and sales as "viewer."
D . Duplicate the datasets and create two custom apps: one for marketing dashboards and datasets with marketing as "editor" and one for sales dashboards and datasets with sales as "editor."

Answer: B

Explanation:

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