Which of the following individuals is defined as an "agent" under the uniform securities act? i an individual who represents a broker-dealer selling exempt securities to the public ii an individual who represents a broker-dealer selling securities listed on a national stock exchange iii an individual who represents an issuer in an exempt transaction iv an individual who represents an issuer in a transaction with existing employees without accepting a commission a i and ii only b iii and iv only c i, ii, iv d i, ii, iii, iv