17. The principle of diversification tells us that: A. concentrating an investment in two or three large stocks will eliminate all of the unsystematic risk. B. concentrating an investment in three companies all within the same industry will greatly reduce the systematic risk. C. spreading an investment across five diverse companies will not lower the total risk. D. spreading an investment across many diverse assets will eliminate all of the systematic risk. E. spreading an investment across many diverse assets will eliminate some of the total risk. 18.If the economy is normal, Charleston Freight stock is expected to return 16.5 percent. If the economy falls into a recession, the stock's return is projected at a negative 11.6 percent. The probability of a normal economy is 80 percent while the probability of a recession is 20 percent. What is the variance of the returns on this stock? A. 0.010346 B. 0.012634 C. 0.013420 D. 0.013927 E. 0.014315