need help5

what are the differences between buying a call option, selling a call option, buying a put option, and selling a put option. Also, give an example of a
business scenario in which it would be appropriate to use each of the contracts (a put and a call contract). If, instead, you chose to use the forward market,
assume you were going to receive 100,000 Japanese yen in 6 months, and the current exchange rate is 5 yen to 1 U.S. dollar. How many yen would you sell or buy
in the forward market? Be sure to cite all references using the appropriate citation format.