Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form. 2, -4, and 1 + 3i

a) f(x) = x^4 - 2x^2 + 36x - 80
b) f(x) = x^4 - 3x^3 + 6x^2 - 18x + 80
c) f(x) = x^4 - 9x^2 + 36x - 80
d) f(x) = x^4 - 3x^3 - 6x^2 + 18x - 80