how do you write 5 is to 1 as 20 is to 4 as a proportion in fractional notation?

Question

a. 5 over 1 = 4 over 20
b. 5 : 1 :: 20 : 4
c. 5 over 1 = 20 over 4
d. 5 over 4 = 1 over 20

Answer 1

c. 5 over 1 = 20 over 4