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
Secondary active transpo true is ? 
Select and explain. 
A. Occurs only in same direction, B. Occurs only in opposite direction, C. Uses ATP molecule, D. No carrier required
C: Uses ATP molecule
Answer: C: Uses ATP molecule 
Explanation: Ans. is 'c' i.e., Uses ATP molecule