How to pass a parameter to RecordType?

Hi,

We have 3 interfaces and 1 RecordType. 2 Interfaces call a RecordType and the latter calls a third interface.

Example:

   InterfaceA => RecordType => InterfaceC

   InterfaceB => RecordType => InterfaceC 

My Question: How the InterfaceC may know which source Interface (A or B) have called the RecordType please?

The 2 interfaces A and B calls the RecordType with a RecordLink like :

link: a!recordLink(
    recordType: cons!TST_RECORD_TYPE,
    identifier: fv!row.id
)
    

The RecordType calls the InterfaceC using the Summary action (Tab View).