What is the maximum value of the moment flector produced by the accidental load in the simply supported beam shown in figure 9.45?

The load permanent 'g' distributed throughout the beam produces positive bending moments represented by the parabolic diagram of maximum ordinate gL^2/8.
The maximum value of MS occurs when the beam is fully loaded, regardless of the section considered.
The diagram of MSmax is the diagram of bending moments corresponding to a total uniform load, that is, a quadratic parabola of maximum ordinate pL^2/8.
The minimum moments correspond to the unloaded beam and are MSmin = 0.
a) I and II are correct.
b) II and III are correct.
c) III and IV are correct.
d) I and IV are correct.