Eight seats face the stage of a small theater. Four seats (A1, A2, A3 and A4, in that order) are in row A, the first row from the stage. The four seats in row B (B1, B2, B3 and B4, in that order) are immediately behind row A. Six theater patrons attend the play, each sitting in a seat. The following is known about the seating arrangement:
Erkel sits exactly in front of Cabot.
Seat A2 is always empty.
Gabron sits in seat A4.
Harris does not sit in seat B4.
Explanation:
From the information given for questions, this diagram can be drawn: