Professor French tells you that South Africa’s stock market undervalued and suggests that it is a good investment. You discover that South Africa is about to impose a new tax on security transactions, which will results in lower liquidity. The next class you bring this to Professor French’s attention. Simultaneously, another student mentions that as commodity prices recover South Africa’s stock market will rise sharply. Dr. French ignores the information you provide and congratulates the other student on excellent research. Which type of bias is Professor French displaying? Explain briefly.