A call option to buy 10,000 at a strike price of $1.80 = 1.00 is equivalent to A. a put option to sell $18,000 at a strike price of $1.80 = 1.00. O B. a call option on $18,000 at a strike price of $1.80 = 1.00. O C. a put option on 10,000 at a strike price of $1.80 = 1.00. O D. none of the above