Study the four statements $(i-iv)$ given below and select the two correct ones out of them.

$(i)$ A lion eating a deer and a sparrow feeding on grains are ecologically similar in being consumers.

$(ii)$ Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.

$(iii)$ Predators ultimately lead to the extinction of prey species.

$(iv)$ Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders.

The two correct statements are

• A

  $(ii)$ and $(iii)$

• B

  $(iii)$ and $(iv)$

• C

  $(i) $ and $(iv)$

• D

  $(i)$ and $(ii)$