A polynomial ( f(x) ) with real coefficients and leading coefficient 1 has the given zero(s) and degree. Express ( f(x) ) as a product of linear and quadratic poly.
a. ( (x - 2)(x + 3)(x² - 5x + 6) )
b. ( (x - 2)(x + 3)(x² + 5x + 6) )
c. ( (x + 2)(x - 3)(x² - 5x + 6) )
d. ( (x + 2)(x - 3)(x² + 5x + 6) )