Randy and Nellie have been in a relationship for 10 years. During those 10 years, there have been just as many positive things as negative things, but they both are unhappy and decide to break up. Their decision to break up despite having an equal number of positives and negatives is most consistent with:
A. Negativity bias
B. Hindsight bias
C. Representativeness heuristic
D. Confirmation blat