哪三个智能出价策略可帮助针对线下转化操作进行优化？请选择三项。

The correct smart bidding strategies for optimizing offline conversions are Maximize Conversion Value, Target ROAS (tROAS), and Target CPA (tCPA). These strategies directly optimize for conversion value or cost per conversion, which are crucial for measuring the impact of offline sales. Maximize Conversion Value aims to get the highest total conversion value for your budget. Target ROAS helps you achieve a specific return on ad spend, ensuring profitability. Target CPA focuses on acquiring conversions at a desired cost. CPM and CPC are bidding strategies that optimize for impressions or clicks, respectively, and do not directly optimize for conversion value or cost, making them less suitable for offline conversion optimization.