Answer:
b
Step-by-step explanation:
It would be 1,080,000,000.
When you round China's population, it would be 1,400,000,000. If you rounded USA's, it would be 320,000,000. Subtract them, and you get 1,080,000,000. Hope this helps.
thats confusing
The GFC of 5 and 6 is 2.
Hope this helps :))
I believe the answer is B