(A) France, Russia, and Great Britain.
(B) ** Germany, Austria-Hungary, and Italy
(C) Russia, Germany, and Austria-Hungary
EXPLANATIONS BELOW
Concept note-1: -The Triple Alliance was a military alliance between Germany, Austria-Hungary, and Italy. It was formed on 20 May 1882 and renewed periodically until it expired in 1915 during World War I. Germany and Austria-Hungary had been closely allied since 1879.
Concept note-2: -Triple Alliance, secret agreement between Germany, Austria-Hungary, and Italy formed in May 1882 and renewed periodically until World War I. Germany and Austria-Hungary had been closely allied since 1879. Italy sought their support against France shortly after losing North African ambitions to the French.
Concept note-3: -One alliance included Germany, Austria-Hungary and Italy, called the Triple Alliance. Opposing them was the Triple Entente of France, Russia and England. These complex tensions finally exploded into war.
Concept note-4: -In 1882, the newly-unified state of Italy joined Germany and Austria-Hungary, forming the Triple Alliance.
Concept note-5: -When World War I began in July 1914, Italy was a partner in the Triple Alliance with Germany and Austria-Hungary, but decided to remain neutral. However, a strong sentiment existed within the general population and political factions to go to war against Austria-Hungary, Italy’s historical enemy.