1. Total cost of Bicycles production in PT XYZ for six years in the past is shown in the tables bellows: Table-1. Total Cost of Bicycles production of PT XYZ Year 2013 2014 2015 2016 2017 2018 Volume 30,000 35,000 45,000 40,000 42,000 44,000 Total Cost 130,000,000,000 142,600,000,000 167,500,000,000 155,200,000,000 160,000,000,000 165,100,000,000 The above costs are including fixed cost and variable cost. If there were no significant cost changing in these periods please calculate: a. Yearly fixed cost and unit variables cost! b. Yearly sales volume of bicycle product to achieve yearly profit IDR 30 Billion if if sales unit price is IDR 4.000.000 c. If you can improve the quality of materials with additional unit cost IDR 500.000 and increase sales volume by 6.000 units a year, will you take the decision to apply