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