Physics · Defense Technology

With reference to hypersonic weapon systems, consider the following statements: I. Hypersonic Glide Vehicles (HGVs) are first accelerated using rocket boosters, while Hypersonic Cruise Missiles (HCMs) remain powered during flight by air-breathing propulsion systems. II. In contrast to ballistic missiles, Hypersonic Glide Vehicles do not travel along a fixed parabolic trajectory and are capable of maneuvering during flight. Which of the statements given above is/are correct?