According to the index model,covariances among security pairs are
A) due to the influence of a single common factor represented by the market index return
B) extremely difficult to calculate
C) related to industry-specific events
D) usually positive
E) a and d

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The Answer of According to the index model,covariances among security pairs are
A) due to the influence of a single common factor represented by the market index return
B) extremely difficult to calculate
C) related to industry-specific events
D) usually positive
E) a and d

According to the Index Model,covariances Among Security Pairs Are