Final answer:
Based on his after-tax return, Andy should choose Corporate stock as it has the highest after-tax return of $212.50.
Step-by-step explanation:
In order to determine which investment Andy should choose based on his after-tax return, we need to calculate the after-tax return for each option. Let's start with the corporate stock:
Dividends: $5,000 * 5% = $250
Tax on dividends: $250 * 15% = $37.50
After-tax return on corporate stock: $250 - $37.50 = $212.50
Next, let's calculate the after-tax return for the corporate bonds:
Interest: $5,000 * 6% = $300
Tax on interest: $300 * 33% = $99
After-tax return on corporate bonds: $300 - $99 = $201
Finally, let's calculate the after-tax return for the tax-exempt securities:
Interest: $5,000 * 4% = $200
After-tax return on tax-exempt securities: $200
Comparing the after-tax returns, we can see that Andy should choose Corporate stock as it has the highest after-tax return of $212.50.