Pairwise Scoring Logic

Hello, I have an assessment tool with 10 text based variables.  Each of the variables is paired with another variable in a series of 45 “A or B” type questions.  I need to set up the back end logic to take the results of all the pairwise questions and rank them “most chosen to least chosen” and then redirect based on what variable is most chosen.  Here’s an example below.  Lets say there are four variables, A, B, C and D.  That would then require six questions of non-repeating pairwise choices.

1. A or B
2. A or C
3. A or D
4. B or C
5. B or D
6. C or D

Lets say the respondent chooses C for three of the questions, B for two of the questions, A for one question, and never D.  C would be the highest ranked variable and I would like to redirect the respondent to a page that describes the qualities of C.

Can someone help me understand how to write the logic and then the ending questions?

THANK YOU!