21. Estimate the up-factor, used in the binomial option pricing model, for a nine-month option assuming annual volatility is 45%.? Round your answer to two decimal places. 22. Assume WMT is currently trading at $165. A three-month put option, stuck at $150, is available for $3.75. What is the intrinsic value of this put option? ? Round your answer to two decimal places. 23. Assume NFLX is currently trading at $455. A one-month call option, stuck at $450, is available for $6.25. What is the time value of this call option? Round your answer to two decimal places