This problem is based on the 2014 annual report of Campbell Soup Company. Answer the following questions. Refer to the Selected Financial Data for parts (a) to (d). Required a. Find the net sales in 2011. (Enter your answer in millions.) - ! Net sales $ 7,143 million b. Calculate the operating income in 2010. (Enter your answer in millions.) Operating income1,272 million c. Calculate the difference between operating income and net income in 2012. (Enter your answer in millions.) Difference million d. Find the year(s) in which net income decreased compared to the previous year. Year(s) 2011, 2012 and 2013