Which of the following statements are correct related to population studies?

(A) The Neo-Malthusian theories, contended that in the human population fertility behaviour is conditioned by technological development

(B) Thomas Malthus was an English Economist and demographer

(C) Population cohort refers to, a group of population unified by a specific common characteristics

(D) Crude birth rate refers to birth rates minus death rates

(E) Population pyramids are constructed to identify natural growth rate of population

Choose the correct answer from the options given below: