$3.$ A simple T$-$bracket shown below is made through injection molding. Examine the part and its dimensions to select the appropriate parting planes to minimize the clamping forces $($sketch$/$label the parting plane$).$ What is the minimum clamping force assuming that the peak pressure is $40$ MPa?

a$)$ What issues are important to consider in molding this part and how might these issues drive the choice of parting plane?

b$)$ Sketch an appropriate mold, labeling all cores and cavities as appropriate.