What Was the Result of Napoleon's Invasion of Russia

Multiple Choice

What was the result of Napoleon's invasion of Russia?

A) The invasion was a success.
B) The guerrilla warfare tactic was found to be a successful form of warfare.
C) The remaining one-third of Napoleon's army endured a long retreat.
D) The summer invasion resulted in a quick retreat.
E) The Russians and French established a long-term alliance.