Answer question $9.$ Note that: M$\text{'}$s IP address $=10\mathrm{.}9\mathrm{.}0\mathrm{.}105,$ B$\text{'}$s IP address $=10\mathrm{.}9\mathrm{.}0\mathrm{.}6,$ and A$\text{'}$s IP address $=10\mathrm{.}9\mathrm{.}0\mathrm{.}5$