How to get display value of multi select custom field

Hi Kristy, Thank you for looking into this and for your reply, however I’m still not able to access the displayName or the textValue.
I should have mentioned that I’m working on the new React Pages.
In the stream fields I specify the custom field e.g.

stream: {
    $id: "location-stream",
    filter: {
      savedFilterIds: ["xxx"],
    },
    fields: [ "id", "name", "slug", "c_options" ]
[...]

and then later on I access it via document.c_options

I’m not able to specify c_options.displayName or c_options.textValue in either the stream or later on when accessing the variable.
Am I doing something wrong?