Well-intentioned people sometimes attempt to resolve the marital problems of their friends. But these attempts are usually ineffectual and thereby foster resentment among all parties. Thus, even well-intentioned attempts to resolve the marital problems of friends are usually unjustified. Which one of the following principles, if valid, most strongly supports the reasoning above?
A: The intentions of an action are irrelevant to whether or not that action is justified.
B: One should get involved in other people's problems only with the intention of producing the best overall consequences.
C: No actions based on good intentions are justified unless they also result in success.
D: Interpersonal relations should be conducted in accordance with doing whatever is right, regardless of the consequences.
Choose A, B, C or D as your solution.
C