Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. exd5/3...cxd5/4. Bd3/4...Nc6/5. c3/5...Nf6/6. Bf4/6...Bg4/7. Qb3

= Caro-Kann Exchange Variation = Qc8 is most common, though Qd7 allows the option of queenside castling, as well as Rc8.

Theory table
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1.e4 c6 2.d4 d5 3.exd5 cxd5 4. Bd3 Nc6 5.c3 Nf6 6. Bf4 Bg4 7. Qb3