Consider the following three structures : 

Structure I : Beam with hinge support at A, roller at C, guided roller at E, and internal hinges at B and D

Structure II : Pin-jointed truss, with hinge support at A, and rollers at B and D

Structure III : Pin-jointed truss, with hinge support at A and roller at C

Which of the following statements is/are TRUE?

Consider a beam PQ fixed at P, hinged at Q, and subjected to a load F as shown in figure (not drawn to scale). The static and kinematic degrees of indeterminacy, respectively are

The degree of static indeterminacy of a rigid jointed frame PQR supported as shown in the figure is

The static indeterminacy of the two-span continuous beam with an internal hinge, shown below, is ______________.