The navies of _________ two nations jointly launched ‘CARAT’ naval exercise on November 4 ?

a) US, Vietnam
b) India, Bangladesh
c) Bangladesh, US, 
d) None of these

The navies of the United States and Bangladesh on November 4, 2020 jointly launched the ‘Cooperation Afloat Readiness and Training (CARAT) Bangladesh 2020’ to broaden relationships and expand maritime awareness between the two nations.