The following purposes served by a transition curve in a highway alignment include:1. Gradual introduction of the centrifugal force on moving vehicles from zero on the straight alignment to a constant final value on the circular curve.2. Enabling the gradual introduction of super elevation on the roadway.Select the correct answer using the codes given below:

The following purposes served by a transition curve in a highway align

1.	The following purposes served by a transition curve in a highway alignment include:1. Gradual introduction of the centrifugal force on moving vehicles from zero on the straight alignment to a constant final value on the circular curve.2. Enabling the gradual introduction of super elevation on the roadway.Select the correct answer using the codes given below:
A.	1 only
B.	2 only
C.	Both 1 and 2
D.	Neither 1 nor 2
Answer» D. Neither 1 nor 2