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: Dental
Hertwig's epithelial root sheath is made up of 
Select and explain. 
A. Outer and inner enamel epithelium, B. Stratum intermedium, C. Stellate reticulum, D. Hyaline layer of Hopewell-smith
A: Outer and inner enamel epithelium
Answer: A: Outer and inner enamel epithelium 
Explanation: Hertwig's root sheath includes the outer and inner enamel epithelium only. It does not include the stratum intermedium and stellate reticulum.