Carla Agrees to Try to Sell Frank's Prize Dog Spike

Multiple Choice

Carla agrees to try to sell Frank's prize dog Spike for him. Carla does this as a favor to Frank because she knows many professional dog breeders. Carla may be best described as:

A) a universal agent
B) a gratuitous agent
C) an agent who has an agency coupled with an interest
D) a special agent
E) none of the other choices