The 2011 balance sheet of The Washington Post Company shows average shareholders equity of $2,726,277 thousand, net operating profit after tax of $176,109 thousand, net income of $117,157 thousand, and average net operating assets of $2,414,864 thousand. The companys return on net operating assets (RNOA) for the year is: Choose from list below:

		8.6%
		7.3%
		4.8%
		4.3%