In April 2021, who launched NanoSniffer, the world’s first Microsensor-based Explosive Trace Detector (ETD)?

In April 2021, who launched NanoSniffer, the world’s first Microsens

1.	In April 2021, who launched NanoSniffer, the world’s first Microsensor-based Explosive Trace Detector (ETD)?
A.	Nitin Gadkari
B.	Piyush Goyal
C.	Ramesh Pokhriyal ‘Nishank’
D.	Rajnath Singh
E.	Amit Shah
Answer» D. Rajnath Singh