The Nobel Prize for physicsthis year is for the discovery of thegravitational waves released by violent events in the universe such as the mergers of black holes. The first time this was detected was on September 14, 2015, by the LIGO-VIRGO collaboration. Since then three more detections have been made, thelatest one on September 28, 2017. The discovery is due to an extremely delicate experiment. Gravitational waves were predicted by Einstein almost 100 years ago._______________________.
The correct answer is C