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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.

After what time will the two persons, $X$ and $Y$ meet while moving around the circular track? Both of them start from the same point and at the same time.

A. $X$ moves at a constant speed of 5 m/s, while $Y$ starts at a speed $2$ m/s and increases his speed by $0.5$ m/s at the end of every second thereafter.

B. $Y$ can complete one entire lap in exactly $10$ seconds.

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.