For which of the cases below is the given two-parameter family of functions the general solution of the corresponding nonhomogeneous differential equation on the indicated interval? (i) y" – 10y' +9y = 18x^2 – 40x + 4; (ii) y" – 10y' + 25y = 96 sin x – 40 cos x; (iii) x2y" – 20xy' + 110y = 132 ;. (A) (i) and (iii) only (B) none of them (C) (i) only (D) (i) and (ii) only (E) (ii) and (iii) only (F) (iii) only (G) (ii) only (H) all of them