Based on Kim's Conduct, Lam Reasonably Believes That Minh Has

Based on Kim's conduct, Lam reasonably believes that Minh has the authority to act on Kim's behalf, although Minh does not have such authority. A contract between Lam and Minh calls for performance by Kim, who refuses to comply. In this situation, Kim may

A) be estopped from denying that the agent had the requisite authority.
B) cancel the contract at the principal's election.
C) force the agent to perform the contract.
D) use a power of attorney to avoid the contract.