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: Anatomy
Attachment to the first rib is all Except 
Select and explain. 
A. Scalenius-anterior, B. Scalenius-posterior, C. Scalenius-medius, D. Suprapleural membrane
B: Scalenius-posterior
Answer: B: Scalenius-posterior 
Explanation: B. i.e. Scalenius posterior