Roger is an unlicensed assistant in Dave's Maryland office. He performs tasks for several of the firm's licensees. Katherine is a licensed assistant, and she performs tasks for three of the firm's independent contractor licensees. The firm's broker, Michaela, has her own licensed assistant. Which of these statements best represents Michaela's liability for the acts of all these assistants?
a) Michaela is only liable for the actions of her licensed assistant.
b) Michaela is not liable for the actions of unlicensed assistants.
c) Michaela is liable for the actions of all assistants in her brokerage.
d) Michaela is only liable for the actions of licensed assistants.