Data Gathered from Various Automobile Dealers (Toyota, BMW, Etc

Data gathered from various automobile dealers (Toyota, BMW, etc.) and pro- environment organizations (e.g., Sierra Club) were merged into one data warehouse.
Suppose data mining is used to determine how important it is for a customer to purchase
A vehicle with a very low carbon footprint.In data mining this is referred to as what type
Of problem?

A) Regression.
B) Transactional.
C) Unsupervised.
D) Classification.
E) None of the above.