Computer $1$ on network A$,$ with IP address of $10\mathrm{.}1\mathrm{.}1\mathrm{.}8,$ wants to send a packet to Computer $2,$ with IP address of $172\mathrm{.}16\mathrm{.}1\mathrm{.}64.$ If the TTL valu $64$ at the beginning, what is the value of the TTL once it reaches its destination?

$65$

$62$

$60$

$0$