In an experiment,freshly hatched larvae of an insect (Khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amounts of cholesterol. Results obtained are shown in the given graph.
The graph indicates:

  • A
    cholesterol is an essential dietary requirement of Khapra beetle
  • B
    growth of Khapra beetle is directly proportional to cholesterol concentration
  • C
    cholesterol concentration of $2 \, \mu g/g$ diet is the optimum level
  • D
    growth of Khapra beetle is inhibited when cholesterol concentration exceeds $5 \, \mu g/g$ diet

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