E $\left(\frac { 1 } { n - 2 } \sum _ { i = 1 } ^ { n } \hat { u } _ { i } ^ { 2 }\right )$

Multiple Choice

E $\left(\frac { 1 } { n - 2 } \sum _ { i = 1 } ^ { n } \hat { u } _ { i } ^ { 2 }\right )$

A) is the expected value of the homoskedasticity only standard errors.
B) = $\sigma _ { u } ^ { 2 }$
C) exists only asymptotically.
D) = $\sigma _ { u } ^ { 2 }$ /(n-2) .