Which of the following choices correctly represents the Fourier Series for the given function:

A) f(x)=π/4−1/2sin(x)+1/4sin(2x)−1/6sin(3x)+...
B)f(x)=π/4+1/2sin(x)−1/4sin(2x)+1/6sin(3x)−...
C)f(x)=π/4−1/2cos(x)+1/4cos(2x)−1/6cos(3x)+...
D) f(x)=π/4+1/2cos(x)−1/4cos(2x)+1/6cos(3x)−...