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Let's evaluate the sums in both columns:
**Column A:**
\( 0.5 + 34 = 34.5 \)
**Column B:**
For \( 3 - \sqrt{25} \):
\( \sqrt{25} = 5 \)
So, \( 3 - \sqrt{25} = 3 - 5 = -2 \)
Now we have the sums:
- Column A: \( 34.5 \) (which is rational)
- Column B: \( -2 \) (which is also rational)
Both sums in Columns A and B are rational.
Thus, the correct statement is:
**Statement #3: Column A and Column B both have rational sums.**
Therefore, the answer to choose is **3**.