A stakeholder demands a firm date for a feature that has not been refined. What is the most professional response?

• AGive the most likely date, since a rough answer is better than none.
• BDecline to give any date until the item has been refined and forecast.
• CGive a conservative date with padding, so the commitment can be met.
• DGive the range the evidence currently supports, say what makes it wide, and offer to narrow it by refining the item next.