Let f be a function such that f(1)=2 . At each point (x, y) on the graph of f, the slope is given by dy/dx=5xy−x2−y2−5 . Which of the following statements is true? A. f has a relative minimum at x=1
B. f has a relative maximum at x=1
C. F has neither a relative maximum or minimum at x=1
D. There is not enough information