Suppose an Animal Cell Was Placed in a Beaker of Solution

Suppose an animal cell was placed in a beaker of solution. The cell immediately began to swell and ultimately burst. Why did this happen?

A) because the cell's cytoplasm was hypotonic to the solution, which was isotonic
B) because the cell's cytoplasm was hypertonic to the solution, which was hypotonic
C) because the cell's cytoplasm was hypertonic to the solution, which was isotonic
D) because the cell's cytoplasm was hypotonic to the solution, which was hypertonic