this.api() access Options from JSON response

Is it possible to access the options key from the JSON response when using the ajax server side method having set some options in the php file?

I.e. in my JSON response below can I access the options using a this.api function in an initCompletefunction?

{
"data":[],
"options":
    {
        "t_owneraccount.iChaletId":[{"label":"Test 1","value":"128"}],
        "t_owneraccount.iChaletId":[{"label":"Test 2","value":"100"}],
    },
}