AI can evaluate it using an expert system approach or several approaches. AI already provides decision support. The AI would have to both learn (from having many many examples of this situation) to determine likely consequences, and the AI would have to rely on deductive reasoning. AI is good at both of these.
So if the AI has seen this set of circumstances 1000+ times then it may be able to predict something from it. The problem isn't whether or not AI can evaluate it because it for sure can. The bigger question is whether the AI should make the ultimate decision?
I think the owner/user should remain in control and merely get advice from AI. I used the phrase moral search engine because the only thing I want the AI to do is provide moral results from a question.
RE: Can AI be trained to assist with moral decision making?