Bree, an agent for Cleo, enters into a deal with Dining, Inc., to buy Eats Café. If Bree signs her name followed by the word "agent" on the check without identifying Cleo, then Bree is most likely personally liable on the check
a. only if Bree would have bought Eats herself.
b. under any circumstances.
c. unless Bree reasonably believes that she is acting as Cleo's agent.
d. unless Cleo knows that Bree is acting as his agent