A linear function, f, has an x-intercept at (5,0) and a y-intercept at (0,3). Which best describes the shape of the graph of this function? A. As x approaches positive infinity, f(x) approaches negative infinity. B. As x approaches positive infinity, f(x) approaches 3. C. As x approaches positive infinity, f(x) approaches positive infinity. D. As x approaches positive infinity, f(x) approaches 5.