That'll teach me to watch Sky News...
Fortunately, neither 1997 nor "never" are two of the alternative answers on offer. That should eliminate those who think Titanic was a figment of Cameron's imagination (although Jack and Rose were real people of course), and the Gardiner Fan Club, respectively. I hope.
Maybe the competition should have asked what the iceberg was made of? It wouldn't, after all, be the first time that that question was asked...