Which of the Following Best Describes the Expansion of Buddhism

Which of the following best describes the expansion of Buddhism eastward in the first few centuries BCE?

A) Buddhist monks followed commercial networks,spreading the words of the Buddha.
B) The spread of Buddhism was inhibited because Buddhist monks refused to translate Buddhist texts into local languages.
C) Buddhism spread rapidly in China,gaining large numbers of adherents.
D) Buddhism dislodged Zoroastrianism from its dominance on the Iranian plateau.