Northern Conglomerate Has Two Divisions,Division a and Division B

Northern Conglomerate has two divisions,Division A and Division B.Northern looks at competing pure-play firms to estimate the betas of each of the two divisions.After this analysis,Northern concludes that Division A has a beta of 0.8 and Division B has a beta of 1.5.The two divisions are the same size.The risk-free rate is 5% and the market risk premium is 6%.Assume that Northern is 100% equity financed.What is the overall composite WACC for Northern Conglomerate?

A) 10.74%
B) 11.31%
C) 11.90%
D) 12.50%
E) 13.12%