The correct option is B 915
23 , 69 and 1218 are the fractions which look different but are of the same value.
These fractions are called equivalent fractions.
You can get many equivalent fractions from a fraction by simply multiplying or dividing both numberator and denominator of that fraction.
Here, 23=69=1218 are equivalent fractions.
So, 2128 is the odd one here.