Outside urban areas, where are U-turns not permitted?

• On a curve
• On an approach to or near the crest of a hill where the driver of another vehicle cannot see you within 150 metres from either direction.
• Both A and B
  Explanation:

  "Outside urban areas, U-turns are not permitted on a curve or near the crest of a hill where other drivers cannot see you within 150 meters in either direction."
• At an intersection without any traffic control devices