What is the best approach for addressing their conflict at this stage of misunderstanding?

a$.)$

Sunny says to Ruby, "I really don't like you."

b$.)$

Sunny says to Ruby, "You're the worst! Why can't you be nicer to me$?"$

c$.)$

Sunny says to Ruby, "That comment you made during our conversation hurt my feelings, because it sounded like an insult to me$."$

d$.)$

Sunny says nothing to Ruby in the hopes that she will forget her hurt feelings, but she still holds a grudge against her sister.