Which of the following steps you should follow, to give yourself at least a two-second space?

• Pick a marker on the road ahead, when the front of the vehicle ahead passes the marker, count “one thousand and one, one thousand and two”, when you reach the marker, stop counting.
• Pick a marker on the road ahead, when the rear of the vehicle ahead passes the marker, count “one hundred and one, one hundred and two”, when you reach the marker, stop counting.
• Pick a marker on the road ahead, when the rear of the vehicle ahead passes the marker, count “one thousand and one, one thousand and two”, when you reach the marker, stop counting.
  Explanation:

  "To give yourself at least a two-second space, follow these steps: Pick a marker on the road ahead, such as a road sign or hydro pole. When the rear of the vehicle ahead passes the marker, count “one thousand and one, one thousand and two.” When you reach the marker, stop counting."
• None of the above