小贝目前管理着一个广告系列，该广告系列的总投入金额为 7,000 元，可获得 1,400 次转化，每次转化费用 (CPA) 为 5 元。小贝的库存过多，需要提高销量来去库存。为实现这一目标，他愿意提高每次转化费用并增加广告系列支出。 在效果规划工具中创建的以下哪个方案可以帮助小贝达成销货去库存的营销目标？

The correct option is "投入 9,600 元的费用，获得 1,600 次转化，每次转化费用为 6 元" because it represents the only scenario where both the total number of conversions and the total ad spend increase, while also showing an increased CPA (from 5 to 6 yuan) as the advertiser is willing to pay more per conversion to boost sales. This aligns with the goal of increasing sales to clear inventory. The other options are incorrect because: "投入 9,100 元的费用，获得 1,300 次转化，每次转化费用为 7 元" shows a decrease in conversions, which contradicts the goal of increasing sales. "投入 9,800 元的费用，获得 1,400 次转化，每次转化费用为 7 元" shows no increase in conversions, despite a higher spend and CPA. "投入 8400 元的费用，获得 1400 次转化，每次转化费用为 6 元" also shows no increase in conversions, which doesn't meet the objective of increasing sales.