Charles Is in the Market for a New Lawnmower

Multiple Choice

Charles is in the market for a new lawnmower.After speaking to an employee at the local hardware store,Charles agrees to buy a top of the line industrial lawnmower.When the transaction was done,the employees looks up at Charles and asks the following question; "Charles,are you aware you could double the warranty period to 4 years by purchasing complementary insurance for as little as $59.00?" What is the employee doing by asking this question?

A) upsetting Charles
B) confusing Charles
C) cross-selling Charles
D) closing the sale
E) using the bundling technique