(4x+1 - [G1] Consider the function f(x)= 3x 5. lim h0 Which of the following statements are true? Select all that apply and enter the labels of the correct statements in an ascending order without spaces or separators. 1. f(x) is not differentiable at x = 0 because f(0) does not exist. 2. f(x) is not continuous but is differentiable at x = 0. 3. f(x) is not differentiable at x = 0 because it is not continuous at that point. 4. f(x) is differentiable at x = 0 because f(0) exists. f(h)-f(0) does not exist. h f(h)-f(0) h 6. lim h0 if x0 exists. if x > 0.