进行转化提升测试的前提条件是什么？请选择 2 个选项。

To conduct a Conversion Lift Test, two key prerequisites are essential. First, a conversion data source is needed to track and measure the conversions that occur as a result of your campaigns. This allows the test to accurately attribute conversions to the exposed and control groups. Without this, there's no way to quantify the lift. Second, a minimum cumulative ad spend of $80,000 for the campaign is required. This ensures a statistically significant sample size and sufficient data volume to detect a meaningful uplift in conversions, making the test results reliable and actionable. "Enterprise promoted content ads" and "Lead Gen Forms" are types of campaigns or ad formats that can be tested, but they are not universal prerequisites for any Conversion Lift Test. "A/B test results" are an outcome of testing, not a prerequisite for initiating a lift test.