Option a is the correct answer. The inscription of King Ashoka that gives the information that Sakyamuni Buddha was born in Lumbini is the Lumbini Pillar Inscription. It is also famously known as Rummindei Pillar Inscription or Paderia Inscription. The inscription was found in Lumbini, Nepal, in 1896. It is written in the Brahmi script and dates back to the 3rd century BCE. The inscription reads: "King Devanampriya Priyadarsin, Beloved of the Gods, when twenty years had passed after his coronation, came himself and worshipped (this spot) because the Buddha Shakyamuni was born here."