A motorcyclist riding at a constant speed of 60 km/h on the highway applies a constant acceleration for 2 km until he reaches a speed of 80 km/h. Determine the motorcycle's acceleration.

• A. 175 km/h²
• B. 350 km/h²
• C. 700 km/h²
• D. 1400 km/h²

Answer: (C)