How Are Simple Diffusion and Facilitated Diffusion Different

Multiple Choice

How are simple diffusion and facilitated diffusion different?

A) Facilitated diffusion is passive transport, while simple diffusion is not.
B) Facilitated diffusion requires a transport protein, while simple diffusion does not.
C) Simple diffusion requires a transport protein, while facilitated diffusion does not.
D) Simple diffusion is passive transport, while facilitated diffusion is not.