IPC Sec 302: Murder by Dying Blow

Dude, I'm so confused... family keeps asking me to clear their names from traffic challan, aur main yahaan seat pe khud confused hai.

Question: A person causes an accidental death by giving an injury with a sharp edge of a broken glass, but the person dies after 2 hours. Which IPC Sec best suits this?

A) Sec 304 IPC (culpable homicide not amounting to murder) - because it's an accidental death, phir bhi hua toh B) Sec 302 IPC (murder) - because it's an injury with a sharp object, na saamaj karega isse accidental hi nahi.

Which one is correct and kya logic hai?