Which of the Following Are Consistent with Facilitated Diffusion? (1)

Which of the following are consistent with facilitated diffusion? (1) movement is against a concentration gradient
(2) movement is with a concentration gradient
(3) involves a carrier molecule
(4) involves cotransport
(5) involves counter transport
(6) exhibits competition and saturation

A) 1, 2, 4, 5, 6
B) 2, 3, 6
C) 2, 3, 5, 6
D) 1, 3, 4, 5, 6
E) 2, 3, 4, 6