Refer to the given Venn diagram and select the option that correctly identifies P, Q, R and S.
P | Q | R | S | |
A | Steel tiffin box | Wooden pen stand | Plastic jar | Aluminium foil |
B | Spectacles | Butter paper | Wooden door | Raincoat |
C | Mirror | Plastic tumbler | Glass bangle | Eraser |
D | Frosted glass | Cardboard | Rubber band | Wooden spoon |