The given figure shows a circuit which
contains two identical lamps. When the
switch is closed, which of the following
statements best describes, what happened
to lamps P and Q?
A P is brighter than before, but Q does
not light up.
B P does not light up, but Q is brighter
than before.
C Both P and Q are brighter than before.
D P and Q both will not light up.
Can I get explanation on this?