Consider the graphs, shown below, of the functions f() (blue, first graph) and g() (red, second graph). For which values of a E (-3, 3) does lim (f(x) - g(x)) not exist? 3 -2 2 O a =2 O a= -2, a = 2 and a = 3 O a = -3, a = -2, a = 2 and a = 3 O a = -2 and a = 2