Answer: Firm-wide economic capital typically considers correlations between credit risk, market risk, and operational risk.

The correct answer is D. Economic capital is a risk management tool that considers the potential losses a financial institution might face and aims to ensure that the institution has sufficient capital to cover these losses. It takes into account the correlations between different types of risks, such as credit, market, and operational risks, to provide a more holistic view of the capital needed to protect the bank against potential losses. This approach allows for a more efficient allocation of capital resources. Regulatory capital, on the other hand, is the minimum amount of capital that regulators require banks to hold to ensure their stability and to protect depositors and the financial system. Regulatory capital requirements are typically calculated by adding the separate capital requirements for credit, market, and operational risks without considering the correlations between these risks. This means that regulatory capital may not always reflect the true economic capital needs of a bank. Option A is incorrect because regulatory capital does not consider the correlations between different risks; it simply adds the separate capital calculations for each risk type. Option B is incorrect because both economic and regulatory capital would likely increase if the probability of default of a loan portfolio increases, as this would indicate a higher level of risk. Option C is incorrect because both economic and regulatory capital serve as cushions against unexpected losses, although they are calculated differently and have different purposes. Economic capital is the bank's internal estimate of the capital it should hold, while regulatory capital is the amount required by regulators.

Author: LeetQuiz Editorial Team