5. Given that $[x]$ represents the greatest integer not exceeding $x$, if
$$
[x+0.1]+[x+0.2]+[x+0.3]+[x+0.4]+[x+0.5]+[x+0.6]+[x+0.7]+[x+0.8]+[x+0.9]=104
$$

then the minimum value of $x$ is ( ).
A: 11.5
B: 10.5
C: 9.5
D: 8.5