What Is the Function of the North American Industry Classification

What is the function of the North American Industry Classification System?

A) It provides consumer panel service for tracking retail purchases and motivations.
B) It collects store tracking data used with consumer panel data to track the influence of advertising on consumers of packaged goods.
C) It provides information about the number of establishments, sales volume, and number of employees in each industry broken down by geographic area.
D) It measures industrial activity in twenty countries, providing insights into thirty-seven marketplaces via interviews.