Final answer:
The question pertains to the allegiances of countries in World War I, specifically France and Austria-Hungary, but cannot be fully answered without the lettered list.
Step-by-step explanation:
The question relates to the countries involved in World War I and which countries correspond to specific letters (France at Letter A, the country at Letter C, and Austria-Hungary at a certain letter). Given the information provided and the historical context, we know that France was part of the Triple Entente and Austria-Hungary was one of the Central Powers during World War I. However, without a specific list that includes these letters, we cannot accurately determine what country is at Letter C or the exact letter designation for Austria-Hungary.