Study the given table and select the incorrect option regarding W, X, Y and Z.
AW could be an animal that has six legs, is oviparous and has different stages in its life cycle.
BX and Z are warm blooded animals where X is always oviparous whereas Z may be viviparous or oviparous.
CY could be a cold blooded, oviparous, aquatic animal like seal or arowana.
DW could be moth, X could be nightingale,
Y could be Scoliodon and Z could be rat.