What does unitary income elasticity of demand (Ei=1) imply?

Statements: X @ Y $ Z & U, Z @ V

Conclusions: I. V # X II. V $ X

Statements: C > G > E; E = F; G < H 

Conclusions: I) F < G 

II) E < C 

III) C > H

Statement: Z > A ≥ B; Y > W ≤ A

Conclusions: I. Z > W II. Y > Z

Statements: E * M, M # N, N $ K

Conclusions: a) E * N      b) M $ K

Statements: C = A ≤ H < K ≥ L = Q; S = T ≥ K

Conclusion: I. C < T II. A = S

Statements:  Q = R; S ≥ T; P ≤ Q;  R > V; R > S; T ≥ U

Conclusions:

(i) R > U                       

Statements: R ≥ S; T = U < O; R ≥ O; V > T

Conclusions:

I. V > O

II. R > T

III. S > V

Statements: G ≤ H < I = J > K, L < B ≥ V > I ≥ D

Conclusion:

I. G = D

II. K ≤ D

III. B > H

Statements: C ≥ D= E ≤ F, G < F ≤ H < J

Conclusion:

  I. H = D

II. H > D

III. G ≤ D

Statements: A > B ≥ C ≤ N = W, D ≤ Z < Y < B