Consider a two-step (ie. two six-month period) price tree for a share of stock in SGD Corp. >36.30 7 33.00 30 29.70 27.00 > 24.30 Using the binomial model, calculate the current fair value of a regular call option on SGD stock with a strike price X = 28, and risk-free rate R, = 59%. You should also indicate the composition of the implied riskless hedge portfolio at the valuation date