The correct answer is (a). The Joint Parliamentary Committee (JPC) set up for probing the 2G spectrum issue consisted of 15 members from each of the two Houses of Parliament, the Lok Sabha and the Rajya Sabha. The JPC was constituted on 22 April 2010 to investigate the allocation of 2G spectrum licenses by the Department of Telecommunications (DoT) in 2008. The JPC submitted its report to the Speaker of the Lok Sabha on 14 February 2013. The report was tabled in Parliament on 24 February 2013. The JPC found that there were irregularities in the allocation of 2G spectrum licenses and recommended that action be taken against those responsible.
Option (b) is incorrect. The JPC did not have 20 members from the Lok Sabha and 10 members from the Rajya Sabha.
Option (c) is incorrect. The JPC did not have 18 members from the Lok Sabha and 12 members from the Rajya Sabha.
Option (d) is incorrect. The JPC did not have 16 members from the Lok Sabha and 14 members from the Rajya Sabha.