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 |