Well, because the PKA is eight and it's above seven, our guess, that means this will have a positive charge, right? Remember, this will only lose an H atom and become neutral at this PH or above. And because we're below, because our guess has a PH of seven, this will be a positive charge. Let's move on on to this one. So what this PK tells us is this group will lose an H atom at this th or higher. And because we're at a PH of seven, that means this will have a negative charge.