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
The Electron Microscopy is virtually diagnostic in renal biopsy study of - 
Select and explain. 
A. Goodpasture syndrome, B. Churg-Strauss syndrome, C. Alport syndrome, D. Wegener's granulomatosis
C: Alport syndrome
Answer: C: Alport syndrome 
Explanation: For Alport syndrome, Rubins mentions ‘The most diagnostic morphologic lesion is seen only by electron microscopy as an irregularly thickened GBM, with splitting of the lamina densa into interlacing lamellae that surround electron-lucent areas’