You Own a Carpet, Tile, and Flooring Store

You own a carpet, tile, and flooring store. Of the following activities, which one is the best example of selling in your business?

A) Purchasing the building next door so you can expand your showroom and warehouse
B) Deciding to add a new-to-the-market brand of flooring to your product offering
C) Offering customers a 90-days-same-as-cash discount on credit card purchases
D) Using a minivan to deliver the flooring and carpeting to customers' homes and offices