What Was the Major Tactical Strategy at the Heart of the German

What was the major tactical strategy at the heart of the German military's Schlieffen Plan?

A) To engage the British and French in trench warfare in the Belgian forest in order to keep them occupied while knocking out the Russian army on the eastern front
B) To engage Russia on the eastern front, distracting the British and French armies and allowing German forces to sneak in and attack France along its Italian border
C) To aim a concentrated blow against France that was expected to achieve that nation's defeat in six weeks, accompanied by a light holding action against Russia to the east
D) To engage Britain and France in skirmishes in their North African colonies while simultaneously planning land and sea invasions of their European territories