None of the accounting depreciation methods represent the actual physical depreciation of the underlying asset. They are all assumptions made for convenient allocation of an asset's purchase price over the economic life of the asset. Besides, the accelerated depreciation method generates greater present value of tax savings over the straight line method.

Since A and B are independent events P(A) = P(A|B) = 0.8 and P(AB) = P(A|B)
P(B) = 0.80 x 0.60 = 0.48.

A supervisor may delegate his/her supervisory responsibility, however he/she still retain overall responsibility for his/her supervisory function.

The Code of Ethics establishes the framework for ethical decision making in the investment profession.

The Capital Market line is a combination of the risk-free asset and the tangency portfolio that lies on the efficient frontier of risky assets. Hence, the CML consists entirely of efficient portfolios (and every single efficient portfolio must lie on the CML). Further, all the portfolios that lie on the CML are perfectly positively correlated. The SML, on the other hand, plots the expected return of a security against its beta. CAPM then implies that the SML is a straight line with the intercept representing the risk-free rate.
Every single investment security that is fairly priced must lie on the SML. Thus, not every portfolio that lies on the SML is an efficient portfolio or completely diversified.