Compare only the supplied options and information. Separate assumptions from facts. Do not invent prices or claim current research. For {{decision}}, list the supplied options: {{options}}. Turn {{constraints}} into three comparison criteria. Compare each option against those criteria. Explain unknowns instead of inventing measurements. Choose a provisional option and state the strongest trade-off, the key uncertainty and one next action. Give the user a concise recommendation based on the child result. Preserve its uncertainties and do not invent additional research.