If the sales tax is 8.5%, what are the sales tax and total price of a purchase of $6.30?
a) Sales tax: $0.54, Total price: $6.84
b) Sales tax: $0.53, Total price: $6.83
c) Sales tax: $0.55, Total price: $6.85
d) Sales tax: $0.52, Total price: $6.82