As of 2015, which of the following is a sitting judge of the Supreme Court of India?

Justice R. Banumathi was a sitting judge of the Supreme Court in 2015, having been elevated in August 2014. Justice Ranjana Prakash Desai had retired in October 2014. Justice Manjula Chellur was serving in the High Court judiciary, so Banumathi is the person identified by the question.