Who invented the

Statements: K * D, D $ N, N % M, M © W

Which of the following would replace @ and & respectively in the following expression such that ‘O > A’ is definitely true?

Statements:  J @ R % S % B; S $ Y $ Z

Statements: O < D ≤ T; C ≥ X = U; Y < Z = C > D

Conclusions:

I. U ≤ Z

II. O ≤ C

III. Y < D

Statements: M $ K; K & N, N % R, R @ W

Conclusions:     

I. W & K              

Statements: D > C ≥ A ≤ B = F, G ≤ K < L < C

Conclusion:

I. D > G

II. C > G

III. K ≤ B  

Statements: M > L = K ≥ H, V > G > M, U < N = H

Conclusions:

I. V > U

II. H < G

III. L ≥ V

Statements: U > G = L > V < K ≤ C > S < N

Conclusion I: U ≥ V

II: C > V

Given statement shows the relation between different elements followed by two conclusions.  

Statement: C1 < L1 > I2 = E1 ≥ N2 > T1  

Which of the following symbols should replace the question mark (?) in the given expression in order to make L ≤ N definitely true?