Which of the following statements is not correct?

• A.Shortage of food may be caused by pestilence, rinderpest and neglect of farming
• B.Shortage of food may lead to competition, emigration, death and decline in the rate of reproduction
• C.Over-crowding may lead to scarcity of food
• D.Dispersal of seeds and fruits prevents overcrowding
• E.Territorial defence encourages food scarcity in a habitat