This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiotherapy, Subject name: Radiology
Stereotactic radiosurgery is a form of 
Select and explain. 
A. Radiotherapy, B. Cryosurgery, C. Neurosurgery intervention, D. Embolisation and radiofrequency ablation
A: Radiotherapy
Answer: A: Radiotherapy 
Explanation: Stereotactic radiosurgery means delivery of precise high dose radiation in a single fraction to intracranial targetsReference: Eric J Hall Textbook of Radiobiology for Radiologist; 5th edition