Assume that on September 30, 2011, Grandair, the national airline of Germany, purchased a Jumbo aircraft at a cost of 41,000,000 ( is the symbol for the euro). Grandair expects the plane to remain useful for five years (5,200,000 miles) and to have a residual value of 5.200,000. Grandair will fly the plane 390,000 miles during the remainder of 2011 Compute Grandair's depreciation on the plane for the year ended December 31, 2011, using the following methods a. Straight-line b. Units-of-production c. Double-declining-balance Which method would produce the highest net income for 2011? Which method produces the lowest net income? Show your work, because if you don't show your work on a final. and your answer is wrong. )