Read the sentences and choose the option, A or B, which has the same meaning.1) My little brother mustn't walk to school on his own.He's only six years old.a) He shouldn't walk to school on his own, but he canif he wants tob) He is not allowed to walk to school on his own.2) We don't have to finish our English project tonight.a) It is not necessary to finish the project tonight, butyou can if you want to.b) You are not allowed to finish the project tonight.3) You mustn't eat food during the lesson.a) You can eat food during the lesson if you want to, but it is not necessary.b) You are not allowed to eat food during the lesson.4) I have to study tonight because we have an importanthistory test tomorrow.a) It is not necessary to study tonight, but I can ifI want tob) I must study tonight.​