Choose the word (A, B, C or D) that best fits the blank space in the following passage

Two British policemen were (19) ___ to investigate a flying saucer on March 31, 1989, the day before April Fool’s Day. When the policmen arrived at a field in Surrey, they saw a small figure wearing a silver space (20) ___ walking out of a spacecraft. Immediately the police ean off in the opposite direction. Reports revealed that the alien was in fact a small person, and the flying saucer was a hot air balloon that had been specially built to look (21) ___ a UFO by Richard Branson, the 36-year-old chairman of Virgin Records.

Branson had planned to (22) ___ the balloon in London’sHyde Park on April 1. However, a wind change had brought him down in a Survey field. The police received a lot of phone calls from terrified motorists as the balloon driffted over the motorway. One lady was so (23) ___ by the incident that se was crying as she was (24) ___ the UFO to a radio station.