As West, both sides vulnerable, you hold:
952
7
93
KQJ10983.
Dealer on your right opens 1. And you?
Pass
2
3
4
Other
After North's negative double, South's 3 is raised to 4. What is your lead?
K
Other club
9
7
Partner wins the A and then returns the 10 as shown. What do you do?
Discard.
Trump and play another trump.
Trump and play a diamond.
Trump and play a club.