How do I label a point on my 3D parametric equation plot?

GROUPS:
 Hi all,I am having a hard time figuring this out. I have a parametric curve (3D) f[t_] = {4 - 2 t, 2 + t, 8 - t} and I need to label a specific point in the 3D plot at (2,1,3). How do I do this?