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: Pathology
Striae of Retzius are prominent in which of the following zones of enamel caries: 
Select and explain. 
A. Translucent zone., B. Dark zone., C. Body of the lesion., D. Surface zone.
C: Body of the lesion.
Answer: C: Body of the lesion. 
Explanation: Body of the lesion

Between unaffected surface and dark zone
Area of greatest demineralization
Pore volume – 5% in periphery and 25% in center
Quinoline inhibition – body appears transparent
Water inhibition – Positive birefringence compared to sound enamel
Striae of Retzius - prominent