Thanks Rusty. Hope your exams are going equally well!
I'm kicking myself for getting this one wrong and I can't let go..... yet. And why because I followed the answer in the db, no offence to those who put the db together they have done a superjob. So PAPI-74 is right I blindly followed the db.
My first line of thought was less flaps, higher speed on the approach. Less flaps increases your Vref doesn't it? But that wasn't a possibility in the db so remembered the answer given and since then have been
And thinking about it if fly a higher speed on the approach, won't your speed over the threshold be higher? Or do we slam on the breaks to cross the threshold at Vref?