2 The share of Drummond, Griffin, and McNabb, a New Orleans publishing house, is currently trading at $100 but is expected, 90 days from now, to have risen to $150 or to have declined to $50, depending on critical reviews of its new biography of Ezra Pound. Assuming the riskless rate over the next 90 days is 1%, value a call option written on a share of DGM stock that has an exercise price of $85. What is the value of a put option on the same stock with a strike price of $40