$1.$ Three fire stations A$,$ B$,$ C have $3,6$ and $7$ trucks respectively. Assuming that dispatching centre receives $10$ reports every day. The travel time $($in minutes$)$ between the fire stations and the emergency locations are shown as follows. How should the fire trucks be dispatched in order to minimize the total response time?

$12345678910$

A $3\mathrm{.}78\mathrm{.}62\mathrm{.}81\mathrm{.}916\mathrm{.}97\mathrm{.}94\mathrm{.}17\mathrm{.}32\mathrm{.}9$

B $1\mathrm{.}36\mathrm{.}16\mathrm{.}85\mathrm{.}43\mathrm{.}75\mathrm{.}35\mathrm{.}63\mathrm{.}54\mathrm{.}46\mathrm{.}7$

C $5\mathrm{.}93\mathrm{.}72\mathrm{.}23\mathrm{.}45\mathrm{.}22\mathrm{.}63\mathrm{.}23\mathrm{.}63\mathrm{.}52\mathrm{.}1$