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: Medicine
Ultrasound and radionuclids studies are primary imaging modalities used for assessment of - 
Select and explain. 
A. Renal trauma, B. Renovascular hypertension, C. Renal tuberculosis, D. Renal transplant
D: Renal transplant
Answer: D: Renal transplant 
Explanation: None