Check all of the statements that MUST be true if a function f is continuous at the point a: = c. C] lim for) = e) 3H: E] e) is not zero E] e) exists E] the limit from the left and the limit from the right both equal e) E] the limit from the left and the limit from the right both exist C] lim at] exists 3H: E] the limit from the left and the limit from the right both exists and agree