a) Design a product structure noting the quantities for each item and show the low-level coding. Match each number in the structure below with the corresponding item. Number 1 Bracket Item Spring 2 Housing 1) Casting (2) Shaft 111) Base (1) I IV Clamp (2) II Clamp (4) Handle (1) III Bearins (2) IV Handle ) Casting (2) b) Determine the gross quantities needed of each item if you are to assemble 75 brackets. Click the icon to view the completed product structure. Base: 75 units (enter your response as a whole number) Spring: 150 units (enter your response as a whole number). Clamp: 450 units (enter your response as a whole number). Housing: 75 units (enter your response as a whole number). Handle: 450 units (enter your response as a whole number). Casting: 900 units (enter your response as a whole number). Bearing: 150 units (enter your response as a whole number). Shaft: 75 units (enter your response as a whole number). c) Compute the net quantities needed if there are 30 of the base and 100 of the clamp in stock. Base: Spring: Clamp: Housing Handle: OOOOOOOO units (enter your response as a whole number). units (enter your response as a whole number). units (enter your response as a whole number). units (enter your response as a whole number). units (enter your response as a whole number). units (enter your response as a whole number). units (enter your response as a whole number). units (enter your response as a whole number). Casting: Bearing Shaft