l need step by step explanation on how the answer in bold were gotten.* The following prices are available for call and put options on a stock priced at S50. The risk-free rate is 6 percent and the volatility is 0.35. The March options have 90 days remaining and the June options have 180 days remaining. The Black-Scholes model was used to obtain the prices. Calls Puts Strike March June March June 45 6.84 8.41 1.18 2.09 50 3.82 5.58 3.08 4.13 55 1.89 3.54 6.08 6.93 Use this information to answer questions 11. Assume that each transaction consists of one contract (for 100 shares) unless otherwise indicated. Answer question 11 about a calendar spread based on the assumption that stock prices are expected to remain fairly constant. Use the June March 50 call spread. Assume one contract of each. 11. What will be the profit if the spread is held 90 days and the stock price is $45? a. $36 b. $20 c. $558 d. -$20 e. none of the above