Question 6 1 pts Credit ratings I. measure relative default risk; i.e., AAA-rated corresponds to 'least likely to default, not to 'has an X% chance of default. II. are provided by regulatory agencies (e.g., the SEC or the Fed) to aid investors. III. are broadly divided up into 'investment grade' and 'speculative grade' or 'junk bonds.' I only I and III O I, II, and III II and III I and