The h-parameter matrix of the two-part network shown in Fig. is

• A. \(\begin{bmatrix} 20 & 10 \\\ 10 & 20 \end{bmatrix}\)
• B. \(\begin{bmatrix} 15 & 0.5 \\\ -0.5 & 1/20 \end{bmatrix}\)
• C. \(\begin{bmatrix} 1/15 & -1/30 \\\ -1/30 & 1/15 \end{bmatrix}\)
• D. \(\begin{bmatrix} 20 & 10 \\\ -10 & 20 \end{bmatrix}\)