15. arrange the proponents of the marginal productivity theory of factor reward in chronological order (a) j.b.cark (b) marshall (c) walras (d jevons codes (1)

15. Arrange the proponents of the marginal productivity theory of factor reward in chronological order (a) J.B.Cark (b) Marshall (c) Walras (d Jevons Codes (1) (a), (4), (6). (c) (2) (d), (o), (a), (b) (3) (a), (c), (d), (b) 4) (b), (a), (d), (c)