Correct Option: E

Navaratna was the title given originally to nine Public Sector Enterprises (PSEs), identified by the Government of India in 1997 as having comparative advantages, which allowed them greater autonomy to compete in the global market. The number of PSEs having Navaratna status has been raised to 16. In 2009, the government established the Maharatna status, which raises a company's investment ceiling from Rs. 1,000 crore to Rs. 5,000 crore. SAIL, NTPC are now Maharatna; while Bharat Heavy Electricals Limited and Shipping Corporation of India Limited are navaratna companies.