The terms Alpha and Beta are often used in software development to describe different stages of feature testing and release.

Alpha Features:

Option A is correct because Alpha features are typically in the early stages of development and are not available to the public. They are usually tested internally or by a limited audience.

Incorrect Options:

Option B is incorrect because Alpha features are often undocumented as they are in the early development phase.

Option C is incorrect because Alpha and Beta features usually do not offer Service Level Agreements (SLAs) due to their experimental nature.

Option D is incorrect because Beta features might offer limited support, but it is not guaranteed, especially compared to fully released features.