Which One of the Following Statements Correctly Defines Murder

Which one of the following statements correctly defines murder?

A) Causing death by an act done with intention of causing bodily injury as is likely to cause death
B) Causing death by an act done with the knowledge that it is likely to cause death
C) Death is caused by an act which was done under grave and sudden provocation
D) Death is caused by an act done with the intention of causing bodily injury and the bodily injury intended to be inflicted is sufficient in the ordinary course of nature to cause death.