Q$2(10$ Points$)$: Draw the influence lines for $($a$)$ the vertical reaction at $\backslash ($ A $\backslash ),($b$)$ the shear at $\backslash ($ C $\backslash ),$ and $($c$)$ the moment at $\backslash ($ D $\backslash ).$ Use the graphical approach and find the magnitude using an equilibrium analysis. ALSO: determine the value of the largest shear $($positive or negative$)$ at point C caused by a $($single$)$ uniform distributed live load of $\backslash (5\backslash$mathrm$\{$k$\}/\backslash$mathrm$\{$ft$\}\backslash )$ applied over a part of the beam. Hint: To find the magnitude of the response $($reaction$,$ shear, moment$),$ put a lunit load on the point of interest, solve reactions at the supports and find the magnitude from the section cut; e$.$g$.,$ magnitude of vertical reaction at the point of interest is $1$ unit