The Conflict That Developed Between East and West Pakistan, and Eventually

The conflict that developed between East and West Pakistan, and eventually led to the establishment of the state of Bangladesh, was caused by

A) competition over internal development of the nation's natural resources.
B) ethnic differences.
C) many years of international warfare between the two regions.
D) the demand of the people of East Pakistan to establish an independent Marxist state.
E) resentment in East Pakistan that the government ignored their needs.