According to the basic speed law:

• You must never drive a vehicle at a speed that is faster than is reasonable, regardless of the posted limit.
  Explanation:

  "The basic speed law provides that you must never drive a vehicle at a speed that is faster than reasonable under existing conditions."
• You must never drive a vehicle at a speed faster than the posted speed limit.
• You must always drive at the minimum speed limit.
• None of the above.