Katrina uses place value to find the sum of 627 + 361. She begins by breaking the problem into smaller problems. She writes (600 + 300) + (20 + 60) (7 + 1). Which shows the correct sums of the hundreds, tens, and ones?
A. 800+80+9
B. 800+90+8
C. 900+80+8
D. 900+90+8
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