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: Biochemistry
[{'content': 'Maximum damage to DNA is caused by: \nSelect and explain. \nA. a-rays, B. 13-rays, C. 7-rays, D. 8-rays and UV rays', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. a-raysMaximum damage to DNA is caused by a- RaysQ. RadiationContentPenetrating Power Poorest-Q (1)Ionizing PowerMaximumQDamaging PowerMost damagingu-paicleHelium nuclei (i.e. 2 protons & 2neutrons)b-paicleEither high energy electron orantimatter counter pa positronGreater than a-paicle (100)Lesser than a-paicle< a-paicleX-RayLow energy photonsQMore than [l-paiclesLesser than 13-paicle<13-paicley-radiationVery high energy photonsQMore than X Rays (10000)i.e. Most PenetratineMinimum IonizineLeast damaging', 'role': 'assistant'}]