Which of the following is a true statement about the Northwest Ordinance of 1787?

Which of the following is a true statement about the Northwest Ordinance of 1787?
 
  A) It remained silent on the issue of slavery, thus encouraging the slave trade in the territories.
  B) It stipulated that a territory could elect a legislature when its male population reached 1,000.
  C) It allowed a territory to enter the Union as a state once its total population reached 60,000.
  D) It respected the rights of the native inhabitants of the land, protecting them from white settlers.
  E) It failed to incorporate a bill of rights, thus giving the Crown extensive power over the colonies.