Read the following context and choose the best option to answer the question.
Context: On Monday we had to put down our Australian Shepherd . It was a tough loss for our family . Cali was a part of our family . She loved us , took care of us , protected us against strangers , swam with us and wrestled with us .
Question: What may be the reason for needing to put the dog down ?
Options: 
- They were young .
 - They were tired of holding him .
 - They were about to eat .
 - None of the above choices .


None of the above choices .