"Solution (click to show)" shows the wrong solution

[mb64]

In the two exercises just above this section, when you click for the first solution, it instead shows you the second solution.

I think the fix would be to change here from solution = to const solution = or let solution = , for proper lexical scope. I'm not confident enough in my JS to make a PR, though.

[athas]

To be honest, neither am I.