What between would you place the book when shelving a book by MacElvain?

When surnames have a prefix (such as Mc, Mac, de, Von, etc.) and those names are being filed or shelved, the prefix is included as part of the surname, making it one name. Therefore, the surname must be filed or shelved according to the rules of aphabetizing. The rules of alphabetizing are very clear in stating that A comes before C, so the name MacElvain would have to come between MacAvery and McCarter (or better yet, between MacAvery and MacEvans as--again--A comes before C with regard to the prefix, and El comes before Ev). This quiz needs to be corrected.