It has a definite volume and takes the shape of its container. It has an indefinite volume and takes the shape of its container. It has a definite volume, and its shape is independent of its container. It has an indefinite volume, and its shape is independent of its container.
I gave my students this multiple choice question: Propane (C_{3}H_{8}) is a gas at room temperature. Which statement best describes the physical characteristics of a sample of propane at room temperature?

Only one answer is correct among these 4 choices:
- It has a definite volume and takes the shape of its container.
- It has an indefinite volume and takes the shape of its container.
- It has a definite volume, and its shape is independent of its container.
- It has an indefinite volume, and its shape is independent of its container.

Could you tell me which one is correct?

It has an indefinite volume and takes the shape of its container.