Correct Option: A

T In the year 305 BC, Seleucus-I Nicator went to India and apparently occupied territory as far as the Indus, and eventually waged war with the Mauryan Emperor Chandragupta Maurya. His Indian campaign was, however, a failure. Seleucus ceded a considerable amount of territory to Chandragupta in exchange for 500 war elephants, which were to play a key role in the forthcoming battles.