Four different organisms, P, Q, R and S, belonging to the same food chain are used
in an experiment. In the first enclosure, only organisms P, Q and R were put together
while in the second enclosure, only organisms P, R and S were put together.
Based on both the graphs, which of the following is correct?
| Food producer | Prey | Predator | prey and predator | |
| A | P | Q | R | S | B | P | S | R | Q | C | Q | R | P | S | D | Q | R | S | P |
The correct option is B.