A circular road of radius R is banked for a speed v = 40 km/hr. A car of mass m attempts to go on the circular road, the friction co-efficient between the tyre and road is negligible:

• A.  the car cannot make a turn without skidding
• B.  if the car runs at a speed less than 40 km/hr, it will slip up the slope
• C.  if the car runs at the correct speed of 40 km/hr, the force by the road on the car is equal to \[m{{v}^{2}}/r\]
• D.  if the car runs at the correct speed of 40 km/hr, the force by the road on the car is greater than mg as well as greater than \[m{{v}^{2}}/r\]