What output will the following command sequence produce?

echo 1 2 3 4 5 6 | while read a b c; do echo result: $c $b $a; done

A. result: 3 4 5 6 2 1

B. result: 1 2 3 4 5 6

C. result: 6 5 4

D. result: 6 5 4 3 2 1

E. result: 3 2 1