What is the extra widening required (as nearest magnitude) for a pavement of 7 m width on a horizontal curve of radius 200 m, if the longest wheel of vehicle expected on the road is 6.5 m and the design speed is 65 km/h?

• A. 0.3 m
• B. 0.5 m
• C. 0.7 m
• D. 0.9 m