Preflop quiz

What's your play?

8-max · 10 bb
Pot 6.5 bb
UTGopen
2
MPcall
2
HJfold
COfold
BTNfold
D
SB10 bb
BBto act
1
A♥6♣

A player opened, another one called.

The answer comes from Exploit It's full preflop tree, the same one behind the Solver page and Play mode: chip-EV equilibrium, every position at the table, no ICM. EVs are counted from the start of the hand, posted blinds included. An action played at equilibrium, even rarely, counts as perfect.