Charlie Customer Goes to Kim,a Local Travel Agent,and Buys an Airline

Charlie Customer goes to Kim,a local travel agent,and buys an airline ticket on BartAir.In this transaction:

A) Charlie is the principal,Kim is his agent.
B) BartAir is the principal,Kim is its agent.
C) Kim is the agent of neither BartAir nor Charlie.
D) Kim is the agent of both Charlie and BartAir.