What is the difference between the floor number  of G and F?

Study the following information carefully and answer the question given below: There are eight people A, B, C, D, E, F, G and H are living in a 8 floor Building on different floors from top to bottom (such as ground floor is numbered as 1 and top floor is numbered as 8) but not necessarily in the same order. Only one person lives between the floors of C and D  who lives on any floor below the floor of E. H lives on the floor immediately above the floor on which B lives. C lives on the third numbered floor. Only one person lives between the floors of E and F. E lives above F. Only two persons live between the floors of C and G.