听力原文： Attention employees. Employee parking is permitted on the second and third level
s of the parking garage. You must have a parking sticker clearly displayed on the front left windshield of your car in order to park there. Parking stickers are available free of charge from the security office upon presentation of your employee identification card. Cars without parking stickers or with improperly displayed stickers will be ticketed and towed. Please take note of the following: the yellow spaces near the door are reserved for management, and the blue spaces are for all other employees. The red spaces are reserved for maintenance vehicles. Employees or visitors parking in the red spaces with or without parking stickers will have their cars ticketed and towed.
How many levels are reserved for employee parking？
A．One.
B．Two.
C．Three.
D．Four.
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