model. (f) Given that (0,0) = 1, calculate all state prices at the put's expiry, 1(2, 2), 1(2, 1) and 1(2,0). Remember that when when interest rates are variable, you cannot write the state prices directly, rather you should calculate them iteratively. Use the state prices (2,j) withj = 0,1,2 to calculate the premium of the European put and confirm that it agrees with the premium obtained from the binomial pricing tree in part (b)