Northface launched a promotional campaign using various forms of digital media. In order to evaluate the success of the campaign, Northface should
a) measure profitability during and after the campaign.
b) compare sales before and after the campaign was launched.
c) measure sales and profitability after the campaign was launched.
d) measure demand during and after the campaign.
e) look at sales for a year after the campaign.
Answer: b) compare sales before and after the campaign was launched.