assess the probability that an issuer of a security or money market instrument will default, fail to make timely payments, or otherwise not make payments to investors in accordance with the terms of the security or money market instrument;

clearly define and disclose the meaning of any symbol used by the nationally recognized statistical rating organization to denote a credit rating; and

apply any symbol described in paragraph (2) in a manner that is consistent for all types of securities and money market instruments for which the symbol is used.