Why should you not sound the horn unnecessarily while overtaking a cyclist?

• Because cyclists do not like it
• Because the cyclist may get frightened and lose his balance
  Explanation:

  "Avoid sounding your horn unnecessarily while overtaking a cyclist, as it may frighten them and cause them to lose balance. If you must use your horn, tap it lightly and from a safe distance to alert them calmly."
• Because the cyclist can’t move faster
• None of these