The Sepboys fought for the British for many years, so it can't be A.
Even though the Zulu one at first, eventually they lost the battle against the British, so it can't be C.
In China, we had an anti-colonial, anti-christian, and anti-foreign Rebellion called "The Boxers Rebellion". After many bloody battles, they managed to make the empress dowager and her court flee. Making the B, Boxers the only correct answer.
Therefore D can't be correct.
