In your role as a consultant, you are analyzing different online businesses and their specific activation criteria. Match each business model with its corresponding primary indicator for user activation:
- Business I: An e-commerce platform selling electronics
- Business II: A mobile payment application
- Business III: An online project management tool
Match these businesses with the appropriate primary indicators of user activation:
- Primary Indicator A: First transaction
- Primary Indicator B: First purchase
- Primary Indicator C: Sign-up followed by first use of a key feature