Câu 2: 050-100: Open Source Essentials

Which of the following statements is a key characteristic of the Freemium business model in regards to open source software development?

1. A. A product or service is available for free to users who contribute to the product's development.
2. B. A product or service is available for free only if a user wants to run the software on their own computers.
3. C. A product or service is available for free but users may decide to donate money to the developers.
4. D. A product or service is available for free for a specific amount of time and requires payments for ongoing use after the initial period is over.
5. E. A product or service is available for free in a basic version but additional features are only available for paying users. — đáp án hiện tại