Where is stopping, standing or parking permitted only momentarily to pick up or drop off passengers?

• Within 20 feet of a crosswalk at an intersection
• Within 75 feet of the spot across the street from a fire station driveway
• At any place where official signs prohibit standing
• All of the above
  Explanation:

  "Stopping, standing, or parking is permitted only momentarily to pick up or drop off passengers under the following conditions: 1. Within 20 feet of a crosswalk at an intersection. 2. Within 75 feet of the spot across the street from a fire station driveway. 3. At any place where official signs prohibit standing."