D: -the inequality between the rich and the poor in this society
Explanation:
The poor cannot easily cancel a marriage that has already been arranged. Some don't even choose who to marry! On the other hand, the rich have vast choice of marriage and can easily find many options due to inheritance of money from marriage. Many women would gladly marry Mr. Bounderby.
Methinks already from this chemic flame, I see a city of more precious mould: Rich as the town which gives the Indies name, With silver paved, and all divine with gold.