Nevertheless, increased longevity and falling birth rates are major factors making many state pension systems across Europe unsustainable in their present form. Some member states have already introduced major reforms (e.g. Germany, France and Austria) others have continued to adapt their existing systems.
Can we infer the following?
Birth rates are at an all time low

Options are: (I). Yes. (II). It's impossible to say. (III). No.
The answer is:
(II).