This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
True about facilitated diffusion are A/E: 
Select and explain. 
A. Occur in direction of concentration gradient, B. Does not require energy, C. Occur in direction opposite to electrical gradient, D. Facilitated by charge of molecule
C: Occur in direction opposite to electrical gradient
Answer: C: Occur in direction opposite to electrical gradient 
Explanation: C i.e. Occur in direction opposite to electrical gradient