Read the following context and choose the best option to answer the question.
Context: I was at a friend 's house a few days ago and I was feeling thirsty . " Is it okay if I help myself to the juice ? " I asked , peering into the fridge . " Sure , " said my friend .
Question: What may be the reason for them asking permission ?
Options: 
- They felt guilty if they did n't ask permission .
 - They did n't want to upset their friend 's parents .
 - None of the above choices .
 - They wanted to respect their friend 's home .


They wanted to respect their friend 's home .