Which statement is true about the graphs of exponential functions with a base greater than 1?
a. The graphs of exponential functions always generate y-values greater than those of linear and quadratic functions
b. The graphs of exponential functions never generate y-values greater than those of linear and quadratic functions
c. The graphs of exponential functions eventually generate y-values grater than those of linear and quadratic functions
d. The graphs of exponential functions eventually generate y-values grater than those of linear only