Based on the spot price of $16 and the strike price $18 as well as the fact that the risk-free interest rate is 6% per annum with continuous compounding, please undertake option valuations and answer related questions according to following instructions: Binomial trees: Additionally, assume that over each of the next two four-month periods, the share price is expected to go up by 11% or down by 10%

a. answer: node A = 0.54, node B = 0.96, node C = 1.71, nodes D, E and F = 0

b. answer: node A = 1.84, node B = 0.85, node C = 0, node D = 2.02, node F = 5.04

c. Show whether the put-call-parity holds for the European call and the European put prices you calculated in a. and b.

d. Use a two-step binomial tree to calculate the value of an eight-month European call option using risk-neutral valuation.

e. Use a two-step binomial tree to calculate the value of an eight-month European put option using risk-neutral valuation.

f. Verify whether the no-arbitrage approach and the risk-neutral valuation lead to the same results.