Which subject to choose? HELP!!

<p>I'm a high school senior and I have to decide what SAT subject tests I want to take from the following(I have already decided to take lit) need one more:
1) Physics
2)Chemistry
3) Math 2</p>

<p>I'm leaving towards maths 2 because I have heard the curve is pretty lenient? Apart from that my maths is not very strong.
How are the curves of the other 2 subjects?
Which is the most scoring test of these three?
Guys keep in mind I have 2 months to prep and I'm aiming for around 780+!</p>