If f(x) = x/3 - 2 and g(x) = 3x^2 + 2x - 6, find (f + g)(x).
A3x^2 + 7/3x - 8
B3x^2 +2/3x - 8
Cx^2 + 12
D3x^2 + 5/3x + 4
A3x^2 + 7/3x - 8
B3x^2 +2/3x - 8
Cx^2 + 12
D3x^2 + 5/3x + 4