Which of the following are true statements? Mark all that are true. lim f(x) = - 6 implies that lim f(x) = - 6. I- at r + a lim f(x) = - 6 implies that lim f(x) = -6. I + a It at lim f(x) = -6 and lim f(x) = - 6 implies that lim f(x) = - 6. I -+ a lim f(x) = - 6 and lim f(x) = - 6 implies that lim f(x) = - 6. I+ a I -+ a I + a lim f(x) = - 6 and lim f(x) = - 6 implies that lim f(x) = - 6. I + a I + a lim f(x) = - 6 implies that lim f(x) = - 6. I+ a I + a O lim f(x) = - 6 implies that lim f(x) = - 6. I-+ a lim f(x) = - 6 implies that lim f(x) = - 6. Olim f(x) = - 6 implies that lim f(x) = -6. z- a I+ a