D).

1.e3 e6!

FEN: rnbqkbnr/pppp1ppp/4p3/8/8/4P3/PPPP1PPP/RNBQKBNR

1...Nf6 is also interesting with 2.Qf3 c6!. The idea being to move the queen and then play Kd8, when white's queen would become embarrassed due to Ne4 and Ng4 threats. 3.Bd3 and 3.Nh3 seem the best ways to try and counter this plan, black hasn’t demonstrated equal chances in either of these lines...

D1.2.Nf3
D2.2.Qf3

D1.2.Nf3

FEN: rnbqkbnr/pppp1ppp/4p3/8/8/4PN2/PPPP1PPP/RNBQKB1R

2...f6
2...Qf6!? The first move transposes to 1.Nf3 f6 2.e3 e6. The second is quite a complicated line, where black often goes pawns for a piece down for compensation.
----

D2.2.Qf3 f5!

FEN: rnbqkbnr/pppp2pp/4p3/5p2/8/4PN2/PPPP1PPP/RNBQKB1R

3.Qh5 g6 4.Qg5
3.Qxb7 Qh4 4.g3 Nf6
      3...Nf6

The first line is a more positional idea from white. Having drawn forward black's f-pawn and weakened the e5 and g5 squares he wishes to play a quick Nf3, an idea that black must counter. The second white line invites radically different lines from black. The first is an endgame line where black seeks to play a similar queen manoeuvre to swap the queen on b2, where both sides must play for very small edges, the second a complex position with a strange material imbalance, either side could lose from a slight mistake.

1.Nf3
1.Nc3
1.Nh3

Copyright Tipau, 2005