Consider the following statements in the context of geometric

Consider the following statements in the context of geometric design of roads.
I : A simple parabolic curve is an acceptable shape for summit curves.
II : Comfort to passengers is an important consideration in the design of summit curves.
The correct option evaluating the above statements and their relationship is

1. I is true, II is false
2. I is true, II is true, and II is the correct reason for I
3. I is true, II is true, and II is NOT the correct reason for I
4. I is false, II is true

Summit curve is designed on sight distance criteria.