Yoga: Karma Yoga

                                                                  Q: In Bhagavad-gita 2.47, Lord Krishna says, "...but you are not entitled to the fruits of action." What does it mean here to be not entitled to the fruits of action? Does it mean that we aren't the proprietors of the fruits that we get from our work, or does it mean that we don't have a right to obtain or receive the reactionary fruit itself, good or bad, of anything that we do?
                                                                   
                                                                  For example, consider that a student has appeared for an exam. Now does it mean that he does not have the right to obtain the result of exam, whether pass or fail, or does it mean that he has no proprietorship over the result when they are declared?