This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epithelial tissue, Subject name: Anatomy
35 year old female diagnosed to have hyper thyroid disorder. Her thyroid follicle lined by 
Select and explain. 
A. Simple columnar, B. Simple squamous, C. Simple cuboidal, D. Ciliated columnar
A: Simple columnar
Answer: A: Simple columnar 
Explanation: Normal thyroid follicle - simple cuboidal Hyper thyroid follicle - simple columnar Hypo thyroid follicle - simple cuboidal