Which number means the same as:

7,000,000,000 + 900,000,000 + 20,000,000 + 7,000,000 + 100,000 + 70,000 + 3,000 + 800 + 60?

A. 7,927,137,860
B. 7,972,173,860
C. 7,927,173,806
D. 7,927,173,860