It's been quite a few 24 hours now, so I tihnk it's safe to discuss.
Plus it makes little sense why one should have a problem discussing within 24 hours anyhow--Cambridge didn't go through the hassle of Key Time for kicks.
Anyhow, the examiner will probably check the first method and leave the other, though it also depends on how much leverage the examiner is allowed by the mark scheme. I took Variant 2 so I probably can't tell you how to solve the question without knowing it myself, so yeah.