Which sentence is grammatically correct?
AScarcely had I entered than the meeting began.
BScarcely had I entered when the meeting began.
CScarcely I had entered when the meeting began.
DScarcely had entered I when the meeting began.
AScarcely had I entered than the meeting began.
BScarcely had I entered when the meeting began.
CScarcely I had entered when the meeting began.
DScarcely had entered I when the meeting began.