ANSWER ASAP PLZ (INEED PROOF)

In the United Kingdom, 2,009,574 copies of a new mystery book sold in one day. When the sequel came out, 2,649,656 copies were sold in one day. Round the numbers to the nearest hundred thousand to estimate the difference.
Approximately how many more copies of the sequel were sold?

A.
400,000

B.
500,000

C.
600,000

D.
700,000