Which two sets of values are printed by this function and sub?

Function GetVitals(ID As Long, Age As Long, Optional Weight As Long) As String
    GetVitals="ID=" & ID &"Age=" & Age & "Weight=" & Weight
End Function
Sub ShowVitals()
    Dim ID As Long, Age As Long,Weight as Long
    Debug.Print GetVitals(ID:=5,Age:=20)
    Debug.Print GetVitals(ID:=6,Age:=25,Weight:=130)
End Sub