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Data Sufficiency.

Mark (a) If the question can be answered by using one of the statements alone, but cannot be answered by using the other statement alone.

Mark (b) If the question can be answered by using either statement alone.

Mark (c) If the question can be answered by using both statements together, but cannot be answered by using either statement alone.

Mark (d) If the question cannot be answered even by using both the statements together.

What is the cost price of the chair?

A. The chair and the table are sold, respectively, at a profit of $5$% and $20$%.

B. If the cost price of the chair is increased by $10$% and that of the table is increased by $20$%, the profit reduces by Rs. $20$.

1. If the question can be answered by using one of the statements alone, but cannot be answered by using the other statement alone.
2. If the question can be answered by using either statement alone.
3. If the question can be answered by using both statements together, but cannot be answered by using either statement alone.
4. If the question cannot be answered even by using both the statements together.