To include comments as part of documentation, you typically use specific lexical elements to indicate the start and end of the comment. In this case, you have to choose more than one option from the given choices.
Let's go through each option to understand why it is correct or incorrect:
Option A) // - This option is incorrect because double forward slashes (//) are typically used to start a single-line comment in many programming languages, but they are not commonly used to indicate comments in documentation.
Option B) /* - This option is incorrect because a forward slash followed by an asterisk (/*) is commonly used to start a multi-line comment in many programming languages, but it is not a common choice for documenting comments.
Option C) /** - This option is correct because a forward slash followed by two asterisks (/**) is commonly used to start a comment block in documentation. This is often used in conjunction with a specific format called a "docstring" to document code.
Option D) / - This option is correct because an asterisk followed by a forward slash (/) is commonly used to end a comment block in documentation. This is the closing element that matches the opening /**.
Therefore, the correct answers are Option C (/*) and Option D (/). These options are correct because they are commonly used to start and end comment blocks in documentation.