Bern, a Salesperson at Carpet Inc

Bern, a salesperson at Carpet Inc., tells Dan, a customer, "Buy your flooring here, and I'll install it for less than the company would charge." Dan buys carpeting, which Bern installs for half the firm's price. Bern keeps the money. With respect Carpet Inc., Bern has breached

A) no duty.
B) the duty of loyalty.
C) the duty of performance.
D) the duty of obedience.