The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

P: While the Soviet Government bought grain and other foreign consumer goods to be sold in domestic markets at heavily subsidized rates, Russia rejected socialism.
Q: The oil industry was the prime target of a sweeping privatization drive launched after the break-up of the Soviet Union.
R: The Russian government has failed to do for its people even a fraction of what the Soviet Union, with twice the population, did with the revenue generated from oil.
S: However, not all Russian have been rolling in oil wealth.