The expected return for Stock A is calculated using the factor betas and the changes in the macroeconomic factors from the baseline scenario. The baseline scenario has an industrial production growth of 3.0% and an interest rate of 1.5%, with an expected return for Stock A of 5.0%. The forecast for the following year predicts an industrial production growth of 4.2% (a 1.2% increase from the baseline) and an interest rate of 1.75% (a 0.25% increase from the baseline).

The formula to calculate the expected return for the new scenario is: $\text{Expected Return} = \text{Baseline Return} + (\beta_{\text{industrial production}} \times \text{Industrial Production Shock}) + (\beta_{\text{interest rate}} \times \text{Interest Rate Shock})$

Plugging in the values: $\text{Expected Return} = 5\% + (1.3 \times 1.2\%) + (-0.75 \times 0.25\%)$ $\text{Expected Return} = 5\% + 1.56\% - 0.1875\%$ $\text{Expected Return} = 6.3725\%$

Rounded to two decimal places, the expected return for Stock A for the next year is approximately 6.37%, which corresponds to option B (6.4%).