`{:("Column A","The saving from a person's income; and his expenditure. The ratio of Marc's income to his boss's is 3: 4. Their respective expenditure ratio is 1 : 2","Column B"),("The saving from income of Marc",,"The saving from income of Marc's Boss"):}`

Options

A. If column A is larger
B. If column B is larger
C. If the columns are equal
D. If there is not enough information to decide

Answer

To solve the problem, we need to analyze the savings of Marc and his boss based on the given ratios of their incomes and expenditures.

### Step-by-Step Solution:

1. **Define the Ratios**:
- Let Marc's income be represented as \(3k_1\) and his boss's income as \(4k_1\) (where \(k_1\) is a constant).
- The ratio of their incomes is given as \(3:4\).

2. **Define Expenditures**:
- Let Marc's expenditure be represented as \(k_2\) and his boss's expenditure as \(2k_2\) (where \(k_2\) is another constant).
- The ratio of their expenditures is given as \(1:2\).

3. **Calculate Savings**:
- Marc's savings can be calculated as:
\[ \text{Savings of Marc} = \text{Income of Marc} - \text{Expenditure of Marc} = 3k_1 - k_2 \]
- The boss's savings can be calculated as:
\[ \text{Savings of Boss} = \text{Income of Boss} - \text{Expenditure of Boss} = 4k_1 - 2k_2 \]

4. **Compare Savings**:
- We need to compare Marc's savings and his boss's savings:
\[ \text{Savings of Marc} = 3k_1 - k_2 \]
\[ \text{Savings of Boss} = 4k_1 - 2k_2 \]
- To compare these, we can set up the inequality:
\[ 3k_1 - k_2 \quad \text{vs} \quad 4k_1 - 2k_2 \]

5. **Rearranging the Inequality**:
- Rearranging the inequality gives:
\[ 3k_1 - k_2 > 4k_1 - 2k_2 \]
\[ -k_2 > k_1 \quad \text{or} \quad k_1 < k_2 \]
- This indicates that if \(k_1 < k_2\), then Marc's savings are greater. Conversely, if \(k_1 > k_2\), then the boss's savings are greater.

6. **Conclusion**:
- Since we have no specific values for \(k_1\) and \(k_2\), we cannot definitively conclude which savings are larger. Therefore, we cannot determine if Column A (Marc's savings) is larger, Column B (Boss's savings) is larger, or if they are equal.

### Final Answer:
Since the values of \(k_1\) and \(k_2\) can vary, the correct answer is:
**Option D: There is not enough information to decide.**