If the variable message panels indicate that passenger cars with B environmental label may use a HOV lane, what minimum occupancy must the vehicle have?

If the variable message panels indicate that passenger cars with B environmental label may use a HOV lane, what minimum occupancy must the vehicle have?
A)Two occupants, including the driver.
B)One occupant.Correct
C)Two occupants, not including the driver.
The use of the HOV lane is limited to motorcycles, passenger cars and adaptable mixed vehicles, occupied by at least two people, including the driver.
The lane may also be used, even if occupied solely by the driver, by:
- Two- or three-wheeled motorcycles.
- Passenger cars classified as zero emissions.
- Passenger cars classified as ECO, C or B when indicated on the variable message panels at the entrance to the lane. These vehicles must be identified with the corresponding environmental sticker.