Let's take this $\dfrac{1}{2} $, Here $1\rightarrow Numerator$ & $2\rightarrow Denominator$
A. $\dfrac{1}{2}\rightarrow fraction$, $0.5\rightarrow decimal$
B. $2\rightarrow divisor$, $0\rightarrow quotient$
D. $1\rightarrow dividend$, $2\rightarrow divisor$
So, $Dividend : Divisor$ has a similar kind of relationship like $Numerator:Denominator$