Trnity product Limited makes and sells three types of electronic security systems for which the following information is available Standard cost and selling price per mit Day Scan Night scan Omni scan GH GHC GHC Material 110 155 Manufacturing labour 40 515 Installation labour 24 312 Variable overheads 16 20 28 Selling price 250 320 460 Fixed cost for the period are GH450,000 and installation labour, which is highly skilled is available for 25,000 hours only in a period and is paid GHc8 per hour. Both manufacturing and installation labour are variable cost. The maximum demand for the period is: Day scan 2.000 units: Night scan 3.000 units Omni scan 1.800 units. Required a) Calculate the shortfall (if any) in hours of installation labour. [4 Marks] b) Determine the best production plan assuming the company wishes to maximize profit. [4 Marks] c) calculate the maximum profit that could be achieved from the plan in part (b) above [4 Marks] d) Having carried out an investigation of the availability of installation labour, the firm