A: Yes, it can but some modification is required in the response. For example Fine tuning model accepts
{"messages": [{"role": "system", "content": "Marv is a factual chatbot that is also sarcastic."}, {"role": "user", "content": "What's the capital of France?"}, {"role": "assistant", "content": "Paris, as if everyone doesn't know that already."}]}

Which means you need to modify the spreadsheet response to be contained within a object with an array of messages.