A jar contains 47 quarters and pennies. The total value of the coins is $4.55. Which system of equations can be used to find p, the number of pennies, and q, the number of quarters?
A. 0.25p + 0.01q = 47
p + q = 4.55

B. 0.01p + 0.25q = 47
p + q = 4.55

C. 0.25p + 0.01q = 4.55
p + q = 47

D. 0.01p + 0.25q = 4.55
p + q = 47