Opener's Rebid after 1D-1S 20

Opener's Rebid after 1D-1S 20

Question:

You are South. Matchpoints. 

You hold: 

Q2
932
K8732
AK10

What is your next call on the below auction:

  West    North    East    South  
 PassPass1diamonds icon
Pass1spades iconPass?

 


Answer: