For the graph, determine which, if any, of the following functions might be used as a model for the data. MEDIAN INCOME 80- 60- Choose the correct answer below. Median Income (In thousands) 40- Quadratic, f(x) = ax + bx + c, a0 Exponential, f(x) = ao . a*, 0 1 A B C DE F A: 21 years O Polynomial, neither quadratic nor linear B: 31 years C: 41 years O Linear, f(x) = mx +b D: 51 years E: 61 years F: 71 years