Opener's Rebid after Partner's Negative Double 10

Opener's Rebid after Partner's Negative Double 10

Question:

You are South. Matchpoints. None vul. 

You hold: 

Q10
KJ
KJ8765
Q32

What is your next call on this auction:

  West    North    East    South  
   1diamonds icon
1hearts iconDbl 2hearts icon?

Answer: