Option a is the correct answer. Sir William Jones recognized Sandrokottos as Chandragupta Maurya. In 1793 CE, Sir William Jones, the President of the Asiatic Society, made a significant discovery that connected the identification of the Indian king named Sandrokottos by classical Greek writers with Chandragupta Maurya, the founder of the Mauryan Dynasty. This discovery marked a pivotal moment in connecting Greek and Sanskrit literature and providing a chronological landmark for early Indian history.