Refer to the given flow chart and select the option which correctly identifies P-S.
P | Q | R | S | |
---|---|---|---|---|
A | Penguin | Silverfish | Grasshopper | Housefly |
B | Dolphin | Salmon | Cockroach | Housefly |
C | Dolphin | Salmon | Housefly | Butterfly |
D | Penguin | Spider | Housefly | Cockroach |