Johnny and Darren both earn $300 working on their respective neighbors' big farms. Johnny puts his $300 in the piggy bank that his parents gave him to encourage him to save. Darren puts his money in a savings account his parents set up for him. The savings account pays 6% interest. They both take their money out after 8 years. How much more money does Darren have than Johnny?

A) $2,669.24

B) $359.52

C) $178.15

D) $478.15