One of the four identical light bulbs in a
series circuit has blown off as shown in the figure.
Which of the following statements is correct about the bulbs?
AZ will not glow while W, X and Y will glow as before.
BZ will not glow while W, X and Y will glow brighter than before.
CZ will glow brighter than before while W, X and Y will glow as before.
DNone of the bulbs will glow.