I don’t think you need a comma after old
B
would be the right answer I think
In a nonfiction work, the text that features alphabetically lists key terms and their definitions is <em>Glossary</em>. A glossary is an alphabetically ordered list of words, that are technical or difficult to understand with their definition. It is used in nonfiction works and it refers to a specific subject or text. It is like a small dictionary.
