Suppose you are certain that the XYZ stock price will change a lot in the near future but not sure of which direction it will move. Which action should you take?
a. Buy a call option with a low strike price and write a call with a high strike price.
b. Buy a put option with a high strike price and write a put with a low strike price.
c. ?Buy one low strike price call + Buy one high strike price call + Short two middle strike call.
d. Buy a call and a put with the same strike price.