Mark the incorrect statement w.r.t. infection of Entamoeba histolytica

• A

  It is a protozoan parasite of human

• B

  It is characterised by constipation and abdominal pain

• C

  It is a parasite in small intestine of man

• D

  Houseflies act as mechanical carriers and serve to transmit the parasite from faeces of infected person to food and food products