In an experiment freshly hatched larvae of an insect (Khapra beetle) were reared on a basal diet without increasing amounts of cholesterol. Results obtained are shown in the graph given in the table [AIIMS 2005]

• 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.