The process of communicating using fibre-optics involves basic steps. Arrange the steps in the correct order.(a) relaying the signal along the fibre(b) creating the optical signal involving the use of a transmitter(c) receiving the optical signal(d) converting it into an electrical signal

• A. a - b - c - d
• B. b - a - c - d
• C. d - a - c - b
• D. c - b - a - d