Read the following context and choose the best option to answer the question.
Context: He sank to the bottom of the pool and stayed there . Edna promptly jumped in to save him . She swam to the bottom and pulled him out .
Question: Why did Edna jump in the water ?
Options: 
- None of the above choices .
 - Someone was drowning in the lake .
 - Someone could n't swim in the pool .
 - Someone was having too much fun in the pool .


Someone could n't swim in the pool .