'Oligopoly' refers to:

Statements: J $ K, K * T, T @ N, N © R

Conclusions:

Statements : Y $ N * G © J @ Q 

Conclusions : 

I. G @ Q 

II. Q * Y 

III. Q % G

Statements:

E ≤ A > J ≥ L; Y > J < D

Conclusions:

I. D > L

II. A > L

Statements:

N < P ≤ I = O; P ≥ J ≥ K ≥ W; Z ≤ M ≤ W

Conclusions:

I) O > Z

II) O = Z

Statements: A ≥ B ≥ Y = Z = M ≥ N ≤ E ≤ F = J

Conclusions:

I. F > Z

II. J ≤ Y

Statements: A$K; E#N; K@E

Conclusions:

I) A$N

II) A@N

Statements: J # Q, Q * D, D % P, P $ Y

Statements: P ≥ U ≥ Y > T ≤ Q = V > R > S < W

Conclusion

I: Q > S

II: T ≤ P

Statements: B ≤ C = T; Z ≥ N ≥ D > K ≥ T

Conclusions:

I. C < N

II. B ≤ K

III. N > B