The correct answer is: Crown Court.
An appeal against a sentence from the Magistrates' Court (hence this must be a criminal case) goes straight to the Crown Court.
Further, a "case stated appeal" can also be made to the high court, which means that the lower court has wrongly interpreted the law and the higher court only review the law
and sentencing on the case, but not the fact. As the question only mentions "appeal" rather than "case stated appeal", the answer is B.