This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ECG and Arrhythmia 2, Subject name: Medicine
A 50 year old man develops an excruciating headache. On examination he has nuchal rigidity. NCCT performed after 4 hours shows blood in the Sylvain fissure. What does the ECG show? 
Select and explain. 
A. T-wave inversion, B. Aifact, C. Premature ventricular complexes, D. Prominent U wave
A: T-wave inversion
Answer: A: T-wave inversion 
Explanation: Case of SAH:- Hypothalamic stimulation Autonomic dysregulation ECG changes with SAH are: Left axis detion U waves T-wave- Deep symmetrical T wave inversion R-wave abnormalities Non-specific ST-T changes