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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.

The values of x and y can be determined uniquely if

A. $3x+2y=45$

B. $10.5x+7y=130$

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.