Study the given flow chart.
Select the option which correctly identifies P-S.
| P | Q | R | S | |
| A | Fern | Fir | Pepper | Coconut |
| B | Orchid | Cedar | Duckweed | Moss |
| C | Mushroom | Pine | Hydrilla | Lotus |
| D | Pitcher plant | Duckweed | Tape grass | Water lily |
explain
explain