A firm's balance sheets for year-end 2011 and 2012 contain the following data. All Items are In millions of dollars. Dec. 31, 2012 36.5 Dec. 31, 2011 33.0 Accounts recelvable Inventorles 26.0 13.0 30.5 26.5 Accounts payable a. Calculate the net working capital in 2011. (Enter your answer in millons rounded to 1 decimal place.) Net working capital $ million b.Calculate the net working capital in 2012. (Enter your answer in millions rounded to 1 decimal place.) Net working capital million c. What happened to investment in net working capital during 2012? (Input the amount as a positive value, Enter your answer in millions rounded to 1 decimal place.) Net working capital ha million. y $ increased decreased