f ( x ) = Jx+2 if x53 4x -7 if x > 3 Let f be the function given above. Which of the following statements are true about f? 1. lim f(x) exists X-> 3 11. f(3) = 5 Ill. f is not continuous at x = 3 O a. I only O b. I, ll and Ill O c. I and ll only O d. ll only