A football team had tryouts to be part of their team. The players practice for a total of 24,485 hours. Which equation shows the relationship between the values of each 4 in this number?
A. 1 x 4 = 4
B. 10 x 4 = 40
C. 10 x 40 = 400
D. 10 x 400 = 4,000
(Please explain answer)