Which of the Following Individuals Engages in Inside Selling

Which of the following individuals engages in inside selling?

A) the person who sells prepaid burial plots to consumers at their homes
B) the neighbor who sells you Avon cosmetics in your home
C) the sales clerk at Kohl's who helps Katherine find a scarf to match her new suit
D) the baker who comes to your office to sell you doughnuts during your coffee break
E) all of the above