A stock has a beta of 0.5. The market risk premium is 6% pa and the risk free rate is 2% pa, both given as effective annual rates. Which of the below statements is NOT correct? Select one: a. The market portfolio's total required return is 8% pa. O b. The stock's required total return is 5% pa and this is also its expected total future return if it's fairly priced. O c. If the market portfolio suddenly fell by 1% in the last 5 minutes, then the stock's price would be expected to fall by 0.5% over that same short time. O d. If the market portfolio's total return was 10% over the last year, the stock's total historical return is expected to be 5% over the same one year period