The Discovery of Roman Coins in India and Discussion of Chinese

The discovery of Roman coins in India and discussion of Chinese silks in the records of the Roman Senate indicate that:

A) Chinese ships once anchored in the port of Rome.
B) Rome's navy reached the Indian Ocean via the Suez Canal.
C) empires are necessary for the conduct of long distance trade.
D) Significant trade existed between the Roman Empire and Asia as far back as the beginning of the Common Era.