4,1,3,5, 6. B. 1,3,4,5,6. C. 4,1,3,6,5. D. 4,1,5,3,6.

2,4,1,3,5, 6. B. 1,2,3,4,5,6. C. 2,4,1,3,6,5. D. 2,4,1,5,3,6.