Queen's Gambit Declined: Catalan Opening

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 dxc4 5.Qa4+ Nbd7 6.Bg2 a6 7.Nc3 Rb8 8.Qxc4 b5 9.Qd3 Bb7 10.O-O c5