Ember Handlebars Iterate object and display key

I want to iterate and render some text in my Ember Handlebars template

I have a JSON as below; (comes within item)

"reasons":{"Display Text 1":[null],"Display Text 2":[null]}

I want to display the text (Display Text 1/Display Text 2) on UI i.e. keys of my object. So in my Ember Handlebars template, I do

{{#each item in item.reasons}}
    <tr>
        <td>{{item}}</td>
    </tr>
{{/each}}

Earlier I had also tried the {{@key}

But I am unable to get the text. What am I doing wrong ?

PS: Please remember that this is Handlebars within Ember.