DS-160 Passport information question for dual citizens

[midsummer 84]

The Passport Information section of the DS-160 wants to know what passport I will be using. I am a dual citizen: UK and Australia and currently live in Australia. I know I have to use my Australian Passport to both leave or enter Australia and assume that I will have to use this to apply for the travel exemption. All up, it made sense to me to enter my Australian Passport information into this section. When I do this, I see this message:

 

Quote

You indicated that the country or authority that issued your passport (or travel document) is different from your country/region of origin (nationality). If this is incorrect, please change it below.
 

• Country/Authority that Issued Passport/Travel Document: Australia
• Country/Region of Origin (Nationality): United Kingdom
  

 

It doesn't give me an option to enter in my UK Passport information anywhere on the form. What did you do?

[midsummer 84]

For anyone browsing looking for an answer to this quest, either will do and I used my Australian Passport.