Stephanie has pennies, nickels, dimes, and quarters in her piggy bank. The total value of the coins is 0.01 (n + 10) + 0.05n + 0.1 (n - 10) + 0.25 (n - 5), where n is the number of nickels. What must 0.1 (n - 10) represent?
A. the number of pennies
B. the number of dimes
C. the total value of all the pennies
D. the total value of all the dimes
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