Which of the following Mohr's circles shown below qualitatively and correctly represents the state of plane stress at a point in a beam above the neutral axis, where it is subjected to combined shear and bending compressive stresses

A simply supported beam of span length $$L$$ and flexural stiffness $$EI$$ has another spring support at the center span of stiffness $$K$$ as shown in fig. The central deflection of the beam due to a central concentrated load of $$P$$ would be

The plane figure shown below is

The degrees of freedom of the following frames is ___________