Once connected campaigns have been enabled, what approach should be recommended?

LenoxSoft currently operates with two Pardot Business Units (PBUs), one for their United States division and another for their European division. In the new year, each business unit (BU) is planning on building the same set of marketing assets and will use them to run the similar campaigns.

Once connected campaigns have been enabled, what approach should be recommended?
A . Create a campaign that is related to both BUs > Create a new dataset in B2B Marketing Analytics that only includes the created campaign > Open a dashboard using this dataset to display an aggregated view of the campaign performance metrics from across both BUs
B. Add the Engagement History component to campaign page layouts > Create a parent campaign that is not related to any BUs and create two child campaigns, each related to a single BU > Enable "Include child campaigns" on the parent campaign
C. Add the Einstein Campaign Insights component to campaign page layouts > Create a parent campaign that is not related to any BUs and create two child campaigns, each related to a single BU > Enable ‘Include child campaigns" on the parent campaign
D. Create a separate campaign for each BU > Create a new dataset in Salesforce reports that only includes the created campaign > Open a dashboard using this dataset to display an aggregated view of the campaign performance metrics from across both BUs

Answer: B