The diving board shown below observes a $185$ lb loading at the orientation shown during a dive. Assume four aluminum pipe style legs $($two at both A and B$),$ each with an outside diameter of $2\mathrm{.}5$ inches and a wall thickness of $0\mathrm{.}3$ inches, support the diving board. What are the stresses in each of the back legs at A and each of the front legs at $B,$ assuming pin type connections at $A,$ while there are roller type connections at at B$?($Hint $-$ Recall pin connections support vertical and horizontal loads while rollers support only normal loads.$)$