when i turn on b-bones i don't get the blocks I am following this tutorial on how to rig and am trying to do a very basic rig for arms. Now in this tutorial he says that for the hand controller i copy the bone, scale it up and turn on b-bones. When he turns on the b-bones he gets these blocks but when i turn on the b-bones i get something more akin to sticks. i can't scale these sticks on any axis other then the y axis and don't know how to fix it.
what they are supposed to look like:

What they look like when i do it:
CtrlAltS to thicken the B-Bones: