What did jagdish chandra bose discover?

Karthika Qpt (2 Points)

30 November 2016  

Nov 30 2016 Google celebrating Jagadish Chandra Bose’s 158th Birthday
https://www.youtube.com/watch?v=YUhx720feho

What did Jagdish Chandra Bose discover?
a) Andromeda galaxy
b) X-ray
c) Plants and metals have feelings
d) Dinosaurs