What is the main conflict in "the strangers that came to town" and how is it resolved?

a.
the main conflict is that the people of syringa street treat the duvitches poorly; it is resolved when people get to know the duvitches and welcome them with friendship and respect.

b.
the main conflict is that the narrator and his brother destroy the duvitches' fish; it is resolved when they replace the fish.

c.
the main conflict is that the duvitches keep to themselves and don't want to be friendly with their neighbors; it is resolved when the duvitches invite the narrator's family to dinner.

d.
the main conflict is when the narrator and his brother their father; it is resolved when they suffer through the heat to make their father proud.

id like if someone who read this book or took this test knew the answer rather than guessing, xx