Concept:The statements describe a partial overlap between income and salary, while salary is fully inside pound and fully outside dollar.
Explanation:"Only a few income is salary" means some income is salary and some income is not salary.
All salary is pound, so the part of income that is salary must also be pound.
Thus, some income is definitely pound.
Conclusion I says "All income is pound" — this is false because the income that is not salary may or may not be pound.
Conclusion II says "No income is pound" — this is false because the income that is salary is already pound.
Therefore, neither conclusion follows.
Answer:Neither conclusion I nor II follows. Hence, option D.
