1) Using the Black and Scholes formula, for each payoff compute the price, delta and probability of being exercised: 1a) A call, K=90, So=100, T=0.25, o=0.2 and r=0.01. 1b) A put, K=37, So=35, T=0.3, o=0.3 and r=0.02. 1c) A call, K=23, So=24, T=5 months, o=24% and r=2%. 1d) A call, K=95% of So, So=50, T=9 months, o=50% and r=3%. le) A put, K=97% of So, So=95, T=1 year, o=30% and r=2%. 1f) An "at-the-money" straddle, So=95, T = 3 months, o=35% and r=2%