As a Result of European Imperialism, After 1900, Persia

As a result of European imperialism, after 1900, Persia:

A) became a British colony.
B) was partitioned and annexed by the British and Russian empires.
C) experienced an internal revolution, leading to the restoration of the shah's power and the rapid westernization of the country.
D) was partitioned with a British sphere of influence in the south and a Russian sphere in the north.