Y-parameter of a two port network is shown below. A 1 Ω resistor is connected to the network as shown. Find out the Y parameter of the whole network.

A

$$\begin{bmatrix}6 & 1 \\0 & 4 \end{bmatrix}$$

B

$$\begin{bmatrix}6 & 3 \\2 & 4 \end{bmatrix}$$

C

$$\begin{bmatrix}4 & 1 \\0 & 2 \end{bmatrix}$$

D

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