Based on the info provided in the table, what would be the CPC and CPA for each advertiser? Please show the calculation process (not only answers) to get the full credit. Hints: Click Through Rate = Clicks / Impressions Conversion Rate = Customers / Clicks Advertiser 1 Advertiser 2 Advertiser 3 CTR 0.8% 0.7% 0.6% Conversion Rate 2.3% 3.1% 1.9% CPM $20 $20 $20 CPC CPA