Study the given diagram and answer the following question.
Which of the following best represents W, X, Y and Z?
AW-Rock, X-Bowl, Y-Wood, Z-Rock
BW-Eraser, X-Jewellery, Y-Woodn, Z-Glass
CW-Umbrella, X-Mirror, Y-Linen, Z-Wood
DW-Polybags, X-Pen, Y-Rock, Z-Wood