The correct options are
B March Revolution
C November Revolution
Russian Revolution refers to a set of two revolutions that happened in 1917- the February or the March Revolution, and the October or the November revolution. Russia followed the Julian calendar until 1 February 1918. The country then changed to the Gregorian calendar, which is followed everywhere today. The Gregorian dates are 13 days ahead of the Julian dates. So according to our calendar, the ‘February’ Revolution took place on 12 March and the ‘October’ Revolution took place on 7 November.