How Does an Open System Contrast with a Closed System

Multiple Choice

How does an open system contrast with a closed system?

A) An open system is open to scientific scrutiny, while a closed system is not.
B) An open system is able to convert energy from one form to another, while a closed system is not able to do so.
C) An open system is prone to collapse, while a closed system is typically more sustainable in the long term.
D) An open system exchanges energy and/or materials with its surroundings, while a closed system does not.