When relying on credit rating agency ratings to determine whether or not a bond should be purchased, investors should be aware that
I. the SEC requires a rating for debt issues of more than $5 million
II. a bond's credit rating reflects only a single point in time and is subject to change
III. a deterioration in price might actually precede a ratings downgrade
IV. credit ratings are not used by issuers other than corporations
A) I and III
B) I and IV
C) II and III
D) II and IV
Answer: C