X' a boy of eleven years stabbed his father thrice as he saw that his two elder brother stabbed the father one after the other he ran away. On being questioned, 'X' justified his act saying that his two elder brothers would not have stabbed the father unless he had done "something wrong" and hence deserved to be killed. What is the criminal liability of 'X' in the case?

A. X should be convicted under Section 302, Indian Penal Code for murder

B. X should be convicted under Section 304, Indian Penal Code for culpable homicide

C. X should be acquitted as he had not attained sufficient maturity of understanding to judge the nature and consequences of his conduct

D. X should be acquitted under Section 82, Indian Penal Code as infancy as a defence as one of the general exception to criminal liability

Answer: Option C