Immigration health surcharge Form Help

I am currently in UK with my husband and applying for FLR (M) visa, I am Indian citizen so have to pay the health surcharge.

I have filled my details on the main applicant and Under my details I have already selected Further leave to Remain - FLR and Visa Type as
Marriage -FLR (M).

the next steps are:

You're joining or remaining with this person in the UK.
Do you have their IHS reference number?
Yes No

I have selected No, as my husband is British Citizen and i don't know his IHS reference number, I don't think he had to pay Immigration health surcharge.

I have filled his details & Nationality the next option is Visa route.

This is where I am stuck.
option to select are:
Discretionary Leave
Further Leave to Remain - FLR
Further Leave to Remain - FLR (O)
PBS Dependant (Tiers 1, 2 and 5 )
Teir 1
Teir 2
Teir 2 and PBS Dependent
Teir 4
Teir5

As my husband is British Citizen I am unsure what I should be selecting.

The form will not allow me to continue unless I fill the Visa route & Visa Type.

Can anyone suggest what I should be selecting, anyone who has filled the Immigration Health surcharge form in similar circumstances to me?

Please help thanks

You apply alone. DO NOT enter your spouse's details.

Thanks
Just noticed detail.
"You don't need to add this person's details if they are a UK or EEA citizen."