Answer & ExplanationAnswer: [A]
Chandragupta Maurya defeated Seleucus. The war is estimated to have begun in 305 BC, with Seleucius crossing the Indus and engaging Chandragupta's forces in the Gandhara (north-west Pakisthan) region. While no accounts of the actual battled fought exist today, the historical consensus is that Chandragupta Maurya emerged victorious against the Greek forces.