(A) The Central Powers
(B) The Axis Powers
(C) ** The Allied Powers
EXPLANATIONS BELOW
Concept note-1: -The Allies, or the Entente powers, were an international military coalition of countries led by the United Kingdom, France, Russia, Italy, Japan, and the United States against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire, Bulgaria during the First World War (1914–1918).
Concept note-2: -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-3: -Thus was built the Triple Entente coalition that fought World War I. At the start of World War I in 1914, all three Triple Entente members entered it as Allied Powers against the Central Powers: Germany and Austria-Hungary.
Concept note-4: -The Triple Entente was the name given to the alliance (partnership) between Russia, France, and Britain, during World War I. These countries were also known as the Allies, and were fighting against Germany, Austria-Hungary, and the Turkish Ottoman Empire.
Concept note-5: -During the conflict, Germany, Austria-Hungary, Bulgaria and the Ottoman Empire (the Central Powers) fought against Great Britain, France, Russia, Italy, Romania, Canada, Japan and the United States (the Allied Powers).