The attitude here is one of kinship (choice C). He definitely does not show disdain or shame for the fruitseller, but instead shows something like pity. Humility is somewhat correct, but the key phrases are in the last 2 sentences, where the speaker thinks that "no, was I more than he?" and that "He was also a father", implying not just humility, but also a measure of being equal to (not higher than) the fruitseller.