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

Options

A. a and d
B. a and b
C. b and c
D. c and d

Answer

B