Some warned that the step the US government has taken to cope with the current crisis is ________ much risk.

Some warned that the step the US government has taken to cope with the current crisis is ________ much risk.

1. A.
   one of
2. B.
   the one of
3. C.
   the one
4. D.
   that one

Some warned that the step the US government has taken to cope with the current crisis is ________ much risk.