Fill in the missing information in the following table. Assume that Portfolio AB is 40 percent invested in Stock A. (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.) Year 2012 2013 2014 2015 2016 Average return Standard deviation Annual Returns on Stocks A and B Stock A Stock B Portfolio AB 13.0 % 23.0 % % 36.2% (36.8) % % (19.4) % 46.8 % % 25.6 % 16.4 % % 13.8 % 25.2 % % % % % % % %