You run an e-commerce store selling shoes, which means that your ultimate goal is sales. You have the following information from your last advertising campaign on Google Ads: Total campaign cost: $4,500 Reach: 25,000 Impressions: 42,000 Number of Clicks: 900 Number of Sessions: 1200 Number of transactions: 150 Average transaction value: $85 Average frequency of purchase per year: 3 Average number of years customers stay with you: 2 Existing customers at the beginning of the year: 2,000 New customers from the campaign: 120 What is the Return on Advertising Spend?

Select one:

a.37.50

b.2.83

c.510

d.Cannot be determined