C ≤ S ...(i) S < D ...(ii); D> M ...(iii)
Combining (i) and (ii), we get
D > S ≥ C . . . (iv)
From (iv), we get D > C. Hence, conclusion I is true.
From (iii) and (iv), we do not get any specific relation between S and M. Hence, conclusion II is not true.