user
Instruction
Answer the question based on the provided table.


Table
Table Title: type of devices used to access the internet by household income quartile, households with home internet access, 2018
Table Content:
<table border="1" cellspacing="0">
<tr> <td rowspan="2">  </td> <td> lowest quartile </td> <td> second quartile </td> <td> third quartile </td> <td> highest quartile </td> <td> total </td> </tr>
<tr> <td colspan="5"> percent </td> </tr>
<tr> <td> mobile devices only </td> <td> 24.1 </td> <td> 14.7 </td> <td> 13.8 </td> <td> 8.0 </td> <td> 13.5 </td> </tr>
<tr> <td> personal computer </td> <td> 75.9 </td> <td> 85.3 </td> <td> 86.2 </td> <td> 92.0 </td> <td> 86.5 </td> </tr>
</table>


Question
who were the most likely to use only mobile devices to access the internet at home.


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["lowest quartile"]