Opener's Rebid after 1D-1S 5

Opener's Rebid after 1D-1S 5

Question:

You are South. Matchpoints. 

You hold: 

J2
AKJ9
AJ92
1065

What is your next call on the below auction:

  West    North    East    South  
   1diamonds icon
Pass1spades iconPass?

 

 


Answer: