Multi-choice problem: Choose from the options at the end, and answer how do you do this: How to craft a simple wooden ring?

OPTIONS:
[a]. Take a block of wood and chisel out the circular shape, sand it down to smooth it and then press a drill through an end to fit your finger, wrap some sand paper around a drill bit and smooth the outside again;
[b]. Take a block of wood and chisel out the circular shape, sand it down to smooth it and then press a drill through the middle to fit your finger, wrap some sand paper around a drill bit and smooth the inside;
[b].