A hypotonic solution has a lower concentration of solutes than the other solution, in this case, the cytoplasm of the plant cell.
This means that the water will move towards the interior of the cell by osmosis. The plant cell can put the water in vacuoles, the cell will still gain that water, and they become turgid (swell), but they do not burst because of the cell wall.
This means A. It will swell, would be the right answer.
