Consider the following statements:
1. Even though a three-hinged parabolic arch is subjected only to vertical loads, It generates horizontal reactions and axial forces.
2. A cable uniformly loaded along the horizontal span assumes the shape of a parabola, whereas a cable uniformly loaded along its length takes the shape of a catenary.
3. Cables loaded uniformly along the horizontal span are by far the types most commonly used structures in practice.
Which of these statements is/are correct?