All Vulnerable		North 3♥		Contract : 6♣
Declarer (W) ♠  K ♥  K ♦  A Q 10 7 ♣  A K Q J 9 7 4	> 4♣		w 10♣	Dummy (E) ♠  A 10 7 4 2 ♥  Q 5 ♦  J 8 6 4 ♣  10 3
		6♣ South
Declarer draws a second round of trumps, winning in Dummy. What does Dummy lead next ?