Calculate the standard deviation of an equally weighted portfolio consisting of X1, X2, and X3.

Select one:

a. 14.17%

b. 13.45%

c. 4.47%

d. 15.45%

e. 11.45%

Suppose we are considering investing in three securities: X1, X2, and X3. Let o. be individual variances of return. Furthermore, let 1,2-o2.1 be the covariance of return between X1 and X2, 1.3-ou the covariance of return between X1 and X3, 2.3- 2 the covariance of return between X2 and X3 The resultant variance-covariance matrix is given as follows: 1,2 1,31 r0.1225 0.0202 0.0044 21 231-10.0202 0.0144-0.0067 32 10.0044-0.0067 0.0081 Calculate the standard deviation of an equally weighted portfolio consisting of X, X2, and X3 Select one: O a. 14.1796 O b. 13.45% O c. 4.47% O d. 15.45% O e. 11.45%