Aşağıdaki cümlelerden hangisinde 'must' ve 'have to' anlam farkı vardır?
A) I must wear a uniform at school. / I have to wear a uniform at school.
B) You must be quiet in the library. / You have to be quiet in the library.
C) She must visit her grandmother. / She has to visit her grandmother.
D) We must follow the rules. / We have to follow the rules.
