X a Surgeon, Amputates the Right Hand Index Finger of Y

Multiple Choice

X a surgeon, amputates the right hand index finger of Y a 14 year old beggar, with Y's consent, and in good faith that this would enable Y to get more alms. In this case

A) X commits no offence as the act was done with the consent of Y
B) X commits an offence as the consent of a child of 14 years is of no avail
C) X commits no offence as the act was done in good faith for the benefit and with the consent of Y
D) X is not exempted from criminal liability as the act done was not in good faith within the meaning of Indian Penal Code.