The correct capital requirement for general market risk for the bank under Basel II.5 is calculated using the formula provided in the explanation. The formula for the market risk capital requirement at a 99.0% confidence level is:

$\text{Market Risk Capital} = \text{max}(\text{VaR}_{t-1}, m \times \text{VaR}_{60-\text{day Avg}}) + \text{max}(\text{sVaR}_{t-1}, m_s \times \text{sVaR}_{60-\text{day Avg}})$

Where:

• $\text{VaR}_{t-1}$ is the latest available 10-day VaR at a 99.0% confidence level.
• $\text{VaR}_{60-\text{day Avg}}$ is the average 10-day VaR over the previous 60 days at a 99.0% confidence level.
• $m$ is the multiplication factor for VaR, set by the supervisory authority.
• $\text{sVaR}_{t-1}$ is the latest available 10-day stressed VaR at a 99.0% confidence level.
• $\text{sVaR}_{60-\text{day Avg}}$ is the average 10-day stressed VaR over the previous 60 days at a 99.0% confidence level.
• $m_s$ is the multiplication factor for stressed VaR, also set by the supervisory authority.

Given the multiplication factors $m = 3$ and $m_s = 3$, and the provided VaR and stressed VaR values, the calculation is as follows:

$\text{Market Risk Capital} = \text{max}(451, 3 \times 413) + \text{max}(995, 3 \times 1,106)$ $= \text{max}(451, 1,239) + \text{max}(995, 3,318)$ $= 1,239 + 3,318$ $= \text{USD 4,557 million}$

Thus, the correct answer is USD 4,557 million (Option C).