The two electrical circuits given here consist of similar bulbs and dry cells. Which of the following statements about the given circuits is correct? (A) The bulbs in circuit Q are brighter than those in circuit P when all the switches are closed. (B) If the middle bulb in circuit Q blows, at least one bulb will still be able to light up. (C) All the bulbs in circuit P will not light up when the switch is open.
(D) One bulb in circuit P will light up when the switch is open.