Choose the Number That Correctly Fills the Blank in Each

Choose the number that correctly fills the blank in each item .
-One kilometer is equal to ________ mm.

A) 36
B) 0.556
C) 454
D) 8
E) 1,000,000
F) 1,000
G) 1
H) 2.54
I) 4.184
J) 16