What are Helina and Dhruvastra, recently seen in news?

A. Novel Prize Winners

B. Padma Award Winners

C. Anti-Tank missile systems

D. None of these

Explanation:

The helicopter-launched version of the Nag anti-tank guided missile, ‘Helina’, and its Air Force variant ‘Dhruvastra’ underwent a joint user trial in the desert ranges recently. The missile systems have been designed and developed indigenously by the Defence Research and Development Organisation (DRDO).