Which statement best describes the problem statement below?

Vision: We want to decrease errors in our billings to clients.

Issue: Clients complain that they receive multiple bills for the same month. We have one software that keeps track of services made to clients, another software that keeps track of the charges of those services, and another software that bills the clients.

Method: Print out services and charges, and enter these values into a billing software.

Suppose you are an ad-serving company and you maintain a log of cookie data for ads you serve to the web pages for a particular vendor (say amazon). a. how can you use this data to determine which are the best ads? b. how can you use this data to determine which are the best ad formats? c. how could you records of past ads and ad clicks to determine which ads to send to a given ip address? d. how could you use this data to determine how well the technique you used in your answer to part c was working? e. how could you use this data to determine that a given ip address is used by more than one person? f. how does having this data give you a competitive advantage vis-à-vis other ad-serving companies?