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
Ligament of Berry is formed by 
Select and explain. 
A. Investing layer of Deep Cervical fascia, B. Pretracheal layer, C. Prevertebral layer, D. Pharyngobasilar fascia
B: Pretracheal layer
Answer: B: Pretracheal layer 
Explanation: The posterior layer of the thyroid capsule is thick. On either side it forms a suspensory ligament for the thyroid gland known as ligament of Berry .The ligaments are attached chiefly to the cricoid cartilage, and may extend to the thyroid cartilage. They support the thyroid gland, and do not let it sink into the mediastinum.