On a Recent Shopping Excursion at the Local Walmart Store

On a recent shopping excursion at the local Walmart store, Jim Krause went from aisle to aisle selecting the products he needed. He bought a variety of products, including shampoo, toothpaste, a green plant for his office, and several pairs of socks.
Interestingly, the only salesperson Krause encountered was the person at the checkout counter. The checkout person at Walmart is an example of a(n) :

A) inside order taker.
B) inside order getter.
C) outside order taker.
D) outside order getter.