Three scores, Pnum (i), Hnum (i,j), and Ssum, have been derived to assist with a determination of the reliability of a secondary structure prediction for a particular base i or a base pair i,j. Which of the following is not a correct regarding Pnum?

• A. is the total number of energy dots regardless of color in the i th row and i th column of the energy dot plot
• B. is the total number of energy dots considering the color in the ith row and ith column of the energy dot plot
• C. represents in an unfiltered dot plot
• D. represents the number of base pairs