Why Is the Text Critical of Louis IX's Magnanimity in the Treaty

Why is the text critical of Louis IX's magnanimity in the Treaty of Paris?

A) He punished the English for imagined indignities that were not in fact their fault.
B) He strengthened the papal hand in future international conflicts.
C) His generosity made future crusades less likely.
D) His refusal to press the French advantage allowed territorial disputes with England to continue.