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: Unknown
All of the following are true about Sibson's fascia except 
Select and explain. 
A. Attached to cervical pleura, B. Arises from scalenus anterior, C. Subclavian arched over it, D. Attached to C7
B: Arises from scalenus anterior
Answer: B: Arises from scalenus anterior 
Explanation: Ref. Gray’s anatomy.  41st edition. Page. 446,896.
Topic, Subtopic – Thorax, fascia
Sibson's Fascia:
The suprapleural membrane, also known as Sibson fascia, is a dense fascial layer that is attached to the inner border of the first rib and costal cartilage anteriorly, C7 transverse process posteriorly and to the mediastinal pleura medially.

It is flat and lies in the oblique plane of the thoracic inlet, with a cervical dome of pleura attached to its under surface.
Lying on it are the subclavian vessels and other structures in the root of the neck.
The function of the membrane is to provide rigidity to the thoracic inlet that prevents distortion due changes in intrathoracic pressure during respiration.