Evaluate the following statements about advanced attribution and incrementality in digital marketing. Identify the two correct statements:
- Statement I: Incrementality testing involves measuring the additional value generated by a marketing channel beyond what would have occurred without it.
- Statement II: Advanced attribution tools can only analyze single-channel performance and cannot assess the interaction between multiple channels.
- Statement III: Multi-touch attribution models in advanced tools assess the impact of multiple touchpoints across different channels on conversions.
Select the combination of correct statements.