Legality vs Morality

Is it more morally right to save five people at the fault of one or save one person for the fault of five? This moral argument is not a new argument as has been going on for years. An example of an moral argument is if you were a doctor and you had five people in desperate need for a transplant and for some reason there was a person who was unconscious, your options are to either let all five people die while the unconscious person survives or take the person how was unconscious and use all of his organs for the other five people.  There is no correct answer for this question but they both have consequences. If you chose to leave the five people to die you are ignoring the fact that you could of saved them whereas if you take the the unconscious person and use him to save multiple people you are essentially committing murder.  I personally have no idea what I would do in this situation. This moral story links back to the book unwind as people are killing people to save thousands of other people.