Which ratio is equivalent to the unit rate 4/1? How was the unit rate transformed into the equivalent ratio?
a. 40/10 by dividing the numerator and the denominator of the unit rate by 10
B.100/20 by multiplying the numerator and denominator of the unit rate by 25
C. 24/6 by multiplying the numerator and denominator of the unit rate by 6
D.8/4 by multiplying the numerator and denominator of the unit rate by 2