6. A bull call spread is a spread of call options that profits when the price of the share rises. One such spread is formed in June 1997 by simultaneously opening a long Dec 180 Orange call contract at 28 p and a short Dec 200 Orange call contract at 17 p. Determine the mathematical expression for the expiry profit on this spread and construct the expiry profit and loss diagram. Repeat for the bull put spread formed in June 1997 by simultaneously opening a long Dec 180 Orange put contract at 5; p and a short Dec 200 Orange put contract at 131 p. Comment on any differences between the two strategies. id a long nut