Mike's Veneer Shop owns a vacuum press that requires annual maintenance. Mike has a contract to cover the maintenance expenses for the next 5 years. The contract calls for an annual payment of \(\$ 600\) with adjustment each year for inflation. Inflation is expected to hold constant at 6 percent/year over this period. The then-current cash flow pattern for this expense is best described by which of the following?

a. Uniform series

b. Gradient series

c. Geometric series

d. Continuous series