Refer to the given Venn diagram and select the option that correctly
identifies animals P, Q, R and S.
| P | Q | R | S | |
| A | Platypus | Krait | Crocodile | Salamander |
| B | Porcupine | Stork | Spadefoot toad | Housefly |
| C | Cassowary | Caiman | Arowana | Viper |
| D | Ladybird | Rhea | Flamingo | Shrew |