Which of the following statement is incorrect.

• A

  The greater the BOD of waste water, the more polluted it is.

• B

  Baculoviruses are pathogens that attack several insects and plants.

• C

  Trichoderma species are effective biocontrol agents of several plant pathogens.

• D

  Statins produced by the yeast are used as blood-cholesterol lowering agents.