What exactly are your trying to ask here? The question is not complete.
B?
They want me to add at least 20 characters for some reason so that's why I wrote this. You don't have to read it. Life is good.
The definition of a glossary i found is: an alphabetical list of terms or words found in or relating to a specific subject, text, or dialect, with explanations. Based on this definition i would think the most likely answer would be B, a list of topics in a book.