The data given in the table shows the number of students studying in 4 different disciplines in 5 institutes. Study the table and answer the question:

What is the ratio of number of students studying Science in institutes C and D taken together to the number of students studying Computer Science in institutes A and E taken together?

3 : 4

Students in science in C & D    :     Students in computer science in  & E

         ( 36 + 48 )                    :              ( 57 + 55 )

               84                           :                    112

                3                            :                      4