Geography · Oceanography

With reference to coastal oceanic processes, consider the following statements regarding Rip currents: I. Rip currents are narrow, concentrated streams of water that flow seaward from the shoreline through the surf zone. II. They are generated primarily due to the piling up of water near the coast by breaking waves and its return flow towards the open sea. III. Rip currents are vertical movements of cold, nutrient-rich water originating from deeper ocean layers. Which of the statements given above are correct?