Given that these are all regular, 4 is 173.7. 5 is 98.7. 6 is 90.8.
It is a rational number in the form of a decimal fraction.
We know, equation of ellipse is given by :

Here,
(h,k) is centre of the ellipse = (0,0).
a = major axis = 8.
b = minor axis = 4.
Putting all given value in above equation, we get :

Hence, this is the required solution.
For C highest to lowest
4/5, 3/4, 7/10, 1/2
For D
3/4, 17/24, 2/3, 7/12, 1/6
Answer:
I believe that It would be b