16. Which of the following is NOT true? a. A call option gives the holder the right to buy an asset by a certain date for a certain price b. A put option gives the holder the right to sell an asset by a certain date for a certain price The holder of a call or put option must exercise the right to sell or buy an asset d. The holder of a forward contract is obligated to buy or sell an asset C! 17. Which of the following is NOT true about call and put options? a. An American option can be exercised at any time during its life b. A European option can only be exercised only on the maturity date c. Investors must pay an upfront price (the option premium) for an option contract d. The price of a call option increases as the strike price increases