A Scrum team has started work on a sprint, with a plan to complete stories U$1$ and U$2,$ estimated at $3$ points each, and story U$3,$ estimated at $5$ points. At the end of the sprint, stories $U_1$ and $U2$ is complete but $U3$ is not yet complete, with the unit testing remaining. What is the velocity of the team?

$11$

$6$

$8\mathrm{.}5$

can't be determined