A heterozygote for two different genes Aa and Bb was test cr

A heterozygote for two different genes (A/a and B/b) was test crossed to an organism with genotype aabb, resulting in the following offspring:
40.2% A/a B/b
5.1% A/a b/b
38.8% a/a b/b
4.9% a/a B/b

What was the genotype of the heterozygote?

A.There is not enough information to determine this

B.ab/AB

C.Aa/Bb

D.Ab/aB

Solution

Not enough information because the given options for parent will always produce same type of gametes(AB, Ab, aB, ab) which will fuse with only one type of gamete i.e from aabb parent (ab ) only, so always the offspring produce will be 25% each from every progeny.

So the answer will be always AaBb will be the offspring for the unknown parental genotype