A Sharper Edge, How does spending Edge work? Options

[arathian]

On p 67 of the BBB under Spending Edge, one of the options is:

"You may re-roll all of the dice on a single test that did not score a hit."

But English is treacherous, so there are two ways this might be interpreted:

1. You spend a point of Edge and re-roll the dice that did not score a hit on the first roll.

2. You can only spend a point of Edge if you got no hits on the first roll, and then you re-roll all of your dice again.

So, which is right?