What is the graph of the function f(x) = the quantity negative x squared plus x plus 20 over the quantity x plus 4? a) a line that crosses the x axis at negative 5 and the y axis at 5. discontinuity exists at negative 4, 1. b) a line that crosses the x axis at 5 and the y axis at negative 5. discontinuity exists at 4, negative 1. c) a line that crosses the x axis at negative 5 and the y axis at negative 5. discontinuity exists at negative 4, 9. d) a line that crosses the x axis at negative 5 and the y axis at negative 5. discontinuity exists at 4, negative 9.