Correct Answer : Option (A) - Russia
According to unconfirmed government reports, India is planning to lease six Tu-160 long-range bombers (also known as strategic bombers) from Russia, which are among the most formidable military aircraft ever created.
The Tu-160, known as the ‘White Swan’ in the Russian Air Force and dubbed ‘Blackjack’ by NATO, is a four-engined bomber capable of an operational range of 12,000 kilometres and carrying an operational load of up to 40 tonnes, conventional or nuclear.
India’s arsenal is devoid of strategic bombers. In comparison, the Chinese Air Force flies the Xian HS-6K, while the H-20 stealth bomber is ready for takeoff. The H-20 can transport conventional, nuclear-tipped, or hypersonic cruise missiles..Source : Defence Aviation post