Which hormone is commonly known as the growth

Statements:  Y $ Z, H $ D, Z * D

Conclusions:      a) Y & H                                b) Y * D

Statements: O > Q < R > P = U ≥ S > T ≥ N

Conclusion

I: S < R

II: U > N

Statements: J > K = N ≥ O = P ≥ Q, M < L ≤ Q

Conclusions:

I. O ≥ M

II. L ≤ N

III. K > M

Statements:  T < U = S ≤  O, C > Y ≥ X, T > K = X 

Conclusions

I. O > K

II. C < T

III. U > K

Statements: A < B ≤ C, A > E, F ≤ B < D

Conclusions:

I. D > A

II. E < B

III. C > E

IV. D > C

Statement: S > P, P ≥ U, U > V, V ≤ N

Conclusion: I. N ≥ U II. S < N

What is the place of question mark (?) in the given expression does the expression L < I and W > L is definitely true?

W = P ≥ M ? L ; P ≤ I