If the equation anxn + an – 1 xn – 1 + ... + a1 x = 0, a1 ≠ 0, n ≥ 2, has a positive root x = α, then the equation nanxn – 1 + (n – 1)an – 1 xn – 2 + ... + a1 = 0 has a positive root, which is
(a) smaller than α
(b) greater than α
(c) equal to α
(d) greater than or equal to α.