Your Company Produces Ski Jackets, Ski Gloved, and Ski Goggles

Your company produces ski jackets, ski gloved, and ski goggles Your sales manager hurries into your office with the year end sales figures:
Which of the following interpretations of the data is/are not reasonable?

A) the sales force is cutting prices of product B to boost unit volume.
B) the sales force is trading customers up to the most expensive version of product A.
C) if the market for product C is expanding, the decline in unit sales may pose a serious problem.
D) both a and b of the above.
E) none of the above.