Physics · Particle Physics and Quantum Computing

Consider the following statements regarding Majorana particles and their relevance to quantum computing: I. A Majorana fermion is a particle that is its own antiparticle, unlike a Dirac fermion. II. Ettore Majorana, who hypothesized these particles in 1937, later experimentally confirmed their existence in superconducting wires. III. In quantum computing, two spatially separated Majorana modes can jointly encode a qubit, offering protection against local disturbances. IV. Majorana particles have been directly observed in particle accelerators like the LHC (Large Hadron Collider). Which of the statements given above are correct?