Only need help with C. PLease show work I want to learn. I will up vote! Thanks!

As the production planner for Xiangling Hu Products, Inc., you have been given a bill of material for a bracket that is made up of a base, 2 springs, and 4 clamps. The base is assembled from 1 clamp and 2 housings. Each clamp has 1 handle and 1 casting. Each housing has 2 bearings and 1 shaft. There is no inventory on hand. 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 Item Bracket I II = Base (1) I IV Clamp(1) II Clamp (4) Handle (1) III Bearing(2) IV Handle (1) Casting (1) Base: 50 units (enter your response as a whole number). Spring: 100 units (enter your response as a whole number). Clamp: 250 units (enter your response as a whole number). Housing: 100 units (enter your response as a whole number). Handle: 250 units (enter your response as a whole number). Casting: 250 units (enter your response as a whole number). Bearing: 200 units (enter your response as a whole number). Shaft: 100 units (enter your response as a whole number). c) Compute the net quantities needed if there are 25 of the base and 100 of the clamp in stock. Base: units (enter your response as a whole number). Spring: units (enter your response as a whole number). Clamp: units (enter your response as a whole number). Housing: units (enter your response as a whole number). Handle: units (enter your response as a whole number). Casting: units (enter your response as a whole number). Bearing: units (enter your response as a whole number). Shaft: units (enter your response as a whole number)