Below is the process flow for Products F$,$ G$,$ and H$.$ Each product sells for different prices: F for R$200,$ G for R$250,$ and H for R$300.$ The production process relies on only one unit each of Resource A and Resource B$,$ allocated based on the minutes specified in the diagram. Raw materials are essential at specific process steps, with costs listed in Rands per unit. $($One unit is consumed for each product.$)$ The market demand absorbs all production output. a$.$ To maximize gross margin per unit, which product should you prioritize? b$.$ If sales personnel earn commissions, which product$($s$)$ should they focus on selling, and what's the potential sales volume? c$.$ To maximize gross profit for one$-$week, which product$($s$)$ and how many units should be produced? d$.$ Based on the strategy determined in part $($c$),$ what would be the total gross profit for the week?