22. Which one of the following is the correct formula for approximating the change in an option's value given a small change in the value of the underlying stock? a. Change in option value Change in stock value/ Delta b. Change in option value Change in stock value/(1 - Delta) c. Change in option value Change in stock value/(1+ Delta) d. Change in option valueChange in stock value ( Delta) e. Change in option value Change in stock value Delta 23. An increase in the price of the underlying stock L decreases the value of a call. , increases the value of a call IIL decreases the value of a put increases the value of a put. a. I and III only b. I and IV only c. II and III only d. II and IV only e. I only