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Question-2: A small company that shovels sidewalks and driveways has 100 homes signed up for its services this winter. It can use various combinations of capital and labor: lots of labor with hand shovels, less labor with snow blowers, and still less labor with a pickup truck that has a snowplow on front. To summarize, the method choices are: Method 1: 50 units of labor, 10 units of capital Method 2: 20 units of labor, 40 units of capital Method 3: 10 units of labor, 70 units of capital a), If hiring labor for the winter costs $100/unit and a unit of capital costs $400, what production method should be chosen? b) What method should be chosen if the cost of labor rises to $200/unit