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<p>Answer the questions based of the following information.</p> <p>ABC Ltd. produces widgets for which the demand is unlimited and they can sell all of their production.The graph below describes the monthly variable costs incurred by the company as a function of the quantity produced. In addition, operating the plant for one shift results in a fixed monthly cost of Tk. 800. fixed monthly costs for second shift operation are estimated at Tk. 1200. Each shift operation provides capacity for producting 30 widgets per month.</p> <p><img alt="" class="file-default media-element" src="https://sothik.com/files/styles/responsive_logobreakpoints_theme_bootstrap_screen-md-max_2x/public/1_3.png?itok=rGz6i0T0"></p> <p>&lt;p class="text-sothik text-justified"&gt;Note : Average unit cost, AC = Total monthly costs/ monthly production, and marginal cost, MC is the rate of change in total cost for unit change in quality produced. &lt;/p&gt;</p> <p>ABC Ltd. is considering increasing the production level. What is the approximate marginal cost of increasing production from its July of 40 units to 41 units?</p>

1. A 110
2. B 130
3. C 150
4. D 160