Which of the following expression is equivalent to sin(5x) ?
a. sin(3x) cos(2x) + cos(4x) sin(x)
b. sin(4x) cos(x) - cos(4x) sin(x)
c. sin(3x) sin(2x) + cos(3x) cos(2x)
d. sin(3x) sin(2x) - cos(3x) cos(2x)
e. cos(3x) sin(2x) + sin(3x) cos(2x)