QUESTION 23 Which of the following statements about market efficiency is true? O A market must be weak-form efficient if share prices are random. O A market can be semi-strong form efficient but not weak-form efficient. O A market can be semi-strong form and strong-form efficient but not weak-form efficient. O A market can be semi-strong form, weak-form or strong form efficient but not all simultaneously. A market must be weak-form efficient if it is semi-strong form efficient. QUESTION 24