Aşağıdaki cümlelerden hangisinde 'must' ve 'have to' aynı anlamda kullanılmıştır?
A) I must call my mom. / I have to call my mom because she asked me.
B) You must wear a seatbelt. / You have to wear a seatbelt by law.
C) She must be tired. / She has to be tired after working all day.
D) We must save money. / We have to save money for our vacation.
