[单项选择]

Early this year, Captain Startup was flying an aeroplane over New Zealand. There was a television camera crew on board. Suddenly, out in the night sky, a bright sphere came into view. Everyone on board saw it and everyone thought, "UFO" —Unidentified Flying Object. Many people believe that a UFO is a visiting craft from outer space. The camera crew went into action and started filming. That week people all over the world saw the film of this mysterious light on their television screens. Someone described the object as "a shining ping pong ball". What was it Was it a spaceship full of visitors from another planet The Captain and the film crew believed it was. Other observers had many different explanations. Some say it was Venus. Some say it was just a trick of light. The people on the aeroplane were not the only ones who saw the "UFO". An air traffic controller also saw it on his radar screen. When a reporter asked him if he believed in UFOs, h
A. The UFO was from outer space.
B. The UFO was another plane.
C. The UFO was an unusual effect of light.
D. The UFO was Venus.