If $'+'$ means $'\times',\; '-'$ means $\;'÷'\; '\times'$ means c asscxx $'-'$ and $' '$ means $'+'$, then $9 + 8 ÷ 8 - 4 \times 9 = ?$

Question

$\begin{array}{11} (a)\; 26 \\ (b)\; 11 \\(c)\; 20 \\ (d)\; 13 \end{array}$