The 2013 financial statements for BNSF Railway report the following information: Year ended December 31, 2013 2012 (In millions) Revenues $22,014 $20,835 Property and equipment, net 52,363 50,070 Total assets 75,030 72,014 a. Compute common-sized property and equipment, net for 2013. Does this ratio seem high or low to you? Explain. b. Compute property, plant and equipment turnover for 2013. Interpret the ratio