<human>: Which of the following solutions is better for the following goal:
Glue stones together

OPTIONS:
- Using a piece of fine grit sandpaper rough up the area of stone you need to glue,Use a  few dabs liquid epoxy on the bottom of a stone and apply to another stone
- Using a piece of fine grit sandpaper rough up the area of stone you need to glue,Use a  few dabs liquid epoxy all over a stone and apply to another stone
<bot>: Using a piece of fine grit sandpaper rough up the area of stone you need to glue,Use a  few dabs liquid epoxy on the bottom of a stone and apply to another stone