Q. Barbara made a contract with Charles to lease an apartment for eleven months beginning April 1 at the rate of $500 per month. On June 1, Charles decides to assign his right to the rent money to Michael. Michael gives Barbara notice of this assignment on July 1. On June 20, Charles becomes desperate for cash and assigns this same interest to Patrick. Patrick gives notice to Barbara immediately. Who should Barbara pay? Explain using both majority and minority theories.