Under the Uniform Securities Act, all the following are considered to meet the definition of agent, EXCEPT:
A. A sales representative of a broker-dealer who sells only securities that are covered under a federal exemption
B. An assistant to a sales agent who accepts orders when the agent is unavailable
C. A subsidiary of a bank that is registered as a broker-dealer and sells non-exempt securities to the public
D. A broker-dealer that sells only exempt securities within the state