As a Result of People's Increased Internet Usage, Companies Have

As a result of people's increased internet usage, companies have an enormous amount of user data. These companies can spend a lot of time and effort trying to determine how to best use this information for themselves. Which of the following represents an inappropriate use of data a company collected from its users?

A) A clothing company uses the credit card application data to open additional accounts for their customers as a courtesy.
B) A dental office runs an analysis on their patient ledgers to determine which customers have overdue balances.
C) A restaurant uses the loyalty program sign-up information collected to send customers a free birthday dessert.
D) An airline uses flight check-in information to determine who boarded a flight before taking-off.