Which of the following statements best describes mountains and hills?A.“Hill” and “mountain” mean the same thing.B.Whether a landform is a hill or mountain is subjective; one person might call a certain landform a hill, and someone else might call it a mountain.C.A hill is defined as a rise that is less than 1,000 feet, and a mountain is anything over 1,000 feet.D.A mountain is defined as any rise over 5,000 feet, and any rise below that elevation is called a hill.