There is only one step between success and failure. Liu Qing, a famous writer in our country, once said, "The most important thing in this road of life is this step. " Many people ran 99 steps clearly, but they stopped because they faced difficulties. He is only one step away from success. Which of the following options matches the meaning of this text? ['step 99 is less useful than the last step.', 'success or failure is determined by that step.', 'Persist at critical times, you may succeed.', 'there is only one step between success and failure.']