Which detail from "Mohandas Gandhi: Truth in Action" introduces an obstacle faced by Indians who wanted to win independence from the British?

A. "The British had been gaining power in India since the mid-1700s, and had officially taken control of India in 1858."

B. "They spoke different languages, quarreled over religion and social class, and were scattered across the land in cities and tiny villages, long before telephones or the Internet could connect them.

C. "To win their independence, the Indians would have to overcome their differences and work together to defeat their common adversary."

D. "Then one day in January 1915, a large crowd of Indians, rich and poor, from the cities and the villages, and from every social class, gathered around a dock in Bombay.