i need your urgent help please

Question 9 (Markets) (Marks: 1) Which of the following statements is true? Select one: a. In efficient markets, a stock's price should change with the arrival of new and material information relevant for the stock b. Strong form market efficiency is not supported by the empirical evidence c. Low P/E stocks may outperform high P/E stocks, even after adjusting for market risk d. All of the above e. Only a. and b. Only a. and c