You're playing teams.
West leads ♦6, which East covers with the ♦7. You have six top tricks.
If you duck, East plays back ♦K, and West shows out. If you duck again, East plays ♦Q and West shells a heart (but their signalling is essentially non-existent).
What's your line?
A) play LHO for the ♣Q (maybe starting with ♣K and unblock ♣9 from dummy)
B) play a club to the ♣A and cover on the way back (presuming RHO follows to the second round), hoping ♥K is onside if you lose to ♣Qx.
C) play two top clubs, falling back on ♥K onside
D) other (what do you think is best?)