Study the following table and answer the question:

Number of students enrolled for Vocational Courses (VC) in institutes A, B, C, D, E & F.

The ratio of the total number of students enrolled for VC in institutes A, C and E in 2015 to the total number of students enrolled in institutes B and D in 2017, is:

3 : 2

Students in A,C & E in 2015  :   Students in B & D in 2017

      ( 150 + 220 + 200)        :         ( 200 + 180 )

               570                     :                 380

                 3                       :                   2