Sam Is George's Agent

Sam is George's agent.George decides to fire Sam.Mel is an old customer of George's and he has dealt on credit with Sam for over 20 years.Ellie is a prospective customer that Sam has spoken with on numerous occasions in his capacity as George's agent, and George was aware of the preliminary negotiations.Mel orders goods from Sam after Sam has been fired but Mel has no knowledge of the firing.Later, Sam takes an order from Ellie.Under the Second Restatement, if George does not give notice of the firing, George will:

A) be liable for the contract with Mel.
B) not be liable on the contract with Mel.
C) not be liable on the contract with Ellie.
D) Both (a) and (c) .
E) Both (b) and (c) .