I believe the answer is A. Don't trust me though, lol.
The answer to your question is,
A. Albumin
-Mabel <3
Germany had formally surrendered on November 11, 1918, and all nations had agreed to stop fighting while the terms of peace were negotiated. On June 28, 1919, Germany and the Allied Nations (including Britain, France, Italy and Russia) signed the Treaty of Versailles, formally ending the war.
