The following option prices were observed for a stock on July 6 of a particular year. Use this information to solve problems 11 through 16. Unless otherwise indicated, ignore dividends on the stock. The stock is priced at 165.13. The expirations are July 17, August 21, and October 16. The risk-free rates are 0.0516, 0.0550, and 0.0588 , respectively. 11. Compute the intrinsic values, time values, and lower bounds of the following calls. Identify any profit opportunities that may exist. Treat these as American options for purposes of determining the intrinsic values and time values and European options for the purpose of determining the lower bounds. a. July 160 b. October 155 c. August 170 12. Compute the intrinsic values, time values, and lower bounds of the following puts. Identify any profit opportunities that may exist. Treat these as American options for purposes of determining the intrinsic values and time values and European options for the purpose of determining the lower bounds. a. July 165 b. August 160 c. October 170 13. Check the following combinations of puts and calls and determine whether they conform to the put-call parity rule for European options. If you see any violations, suggest a strategy. a. July 155 b. August 160 c. October 170