When did the Bolsheviks launch a coup d’etat against the provisional government?

A.
On October 6th and 7th, 1917
B.
On November 6th and 7th, 1917
C.
On December 6th and 7th, 1917
D.
On November 7th and 8th, 1917

D. On November 7th and 8th, 1917

is that right ?

Yes, that is correct. The Bolsheviks launched a coup d’etat against the provisional government on November 7th and 8th, 1917.