Identify all of the global and local extrema of the graph. y 12 10 8 6 4 2 -12 -10 -8 -6 -4 -D 0 2 4 6 8 10 12 X -2 4 6 -8 -10 -12 X a.) 2 is a global and local maximum of f(x) at x = - 2 and x = 4. O -7 is a global and local minimum of f(x) at x = 1. b.) 2 is a global and local maximum of f(x) at x = - 2 and x = 4. O -7 is a global and local minimum of f(x) at x = 1. -5 is a local minimum and it occurs at x = 5. c.) 2 is a global maximum of f(x) at x = - 2 and x = 4. O 7 is a global minimum of f(x) at x = 1. -5 is a local minimum and it occurs at x = 5. d.) 2 is a global maximum of f(x) at x = - 2 and x =4. O -7 is a global minimum of f(x) at x = 1