Please see question below

Question 13 3 pts Professor Popper is owed a pension from OSU in the amount of $200,000 per year for 20 years when he retires, Popper wants to have fun now and assigned the right to his pension to Charlie for $1.5 million. Popper then decided he wanted to have more fun and assigned the same right to William, and after that assigned it to Thomas. Each of them paid Popper $1.5 million as well. William was the first to notify OSU of the assignment. Popper ran off to Ecuador to live with the Blue Footed Boobies. Under the American Rule, who is entitled to receive the pension payments from OSU? Charlie CHenry William Thomas