In the Eighth Schedule of the Constitution of India, which languages were added subsequently?

In the Eighth Schedule of the Constitution of India, which languages were added subsequently? [SSC Combined Graduate Level Exam 26/06/2011]

          a) English, Sindhi, Marathi, Sanskrit

          b) Sanskrit, Sindhi, Konkani, Manipuri

          c) Sindhi, Konkani, Manipuri, Nepali

          d) Marathi, Oriya, Konkani, Nepali