Read the following context and choose the best option to answer the question.
Context: Ate two candied almonds , so 25 calories , and that was that untill we headed home . Lots of walking all day . Then when we fueled up on the way home , I grabbed a 110 calorie protein bar .
Question: What may have happened by walking .
Options: 
- They may have gotten too tired to walk back home .
 - They may lost their ability to drive a car around their home .
 - None of the above choices .
 - They may have lost all the calories they just gained .


They may have lost all the calories they just gained .