What is NanoSniffer, recently seen in news?

What is NanoSniffer, recently seen in news?
A. World’s first Microsensor based ETD
B. Mini satellite launched by China.
C. Supercomputer developed by India.
D. None of these
Explanation:
Union Education Minister Ramesh Pokhriyal ‘Nishank’ launched NanoSniffer, the world’s first Microsensor-based Explosive Trace Detector (ETD). This home-grown Explosive trace detector device (ETD) – NanoSniffer can detect explosives in less than 10 seconds and it also identifies and categorizes explosives into different classes.