Best response to the Queen's Gambit Accepted: Classical Defense (D26)

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 · White to move

What is the best response to the Queen's Gambit Accepted: Classical Defense (1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5)? White to move. See the top replies ranked by opening theory and real-game results, starting with O-O.

The main theoretical reply is O-O, reaching the Queen's Gambit Accepted: Classical Defense, Normal Line.