Which one of the following matrices can be obtained by performing elementary row transformations on the $$3\times 3$$ identity matrix?

A

$$\begin{bmatrix}1&1&1\\1&1&1\\1&1&1\end{bmatrix}$$

B

$$\begin{bmatrix}1&1&1\\2&3&4\\1&2&1\end{bmatrix}$$

C

$$\begin{bmatrix}1&1&1\\2&3&4\\2&5&8\end{bmatrix}$$

D

$$\begin{bmatrix}1&1&1\\-1&1&2\\0&2&3\end{bmatrix}$$