D is the correct answer. The Triple Alliance consisted of Germany, Italy and Austria-Hungary. Due to the geographical positions of these countries, Germany and Italy both shared a land border with France on the West side and Germany and Austria-Hungary both shared a land border with Russia on the East side. Russia and France were both part of the Triple Entente, who were against the Triple Alliance. The data on the construction of battleships and deadnoughts suggests Great Britain and Germany were in an arms race.
