the offspring of a particular cross are 100 percent heterozygous for the trait of plant height. what were…

the offspring of a particular cross are 100 percent heterozygous for the trait of plant height. what were the most likely genotypes of the parents?\no tt * tt\no tt * tt\no tt * tt\no tt * tt
Answer
Brief Explanations:
When one parent is homozygous dominant (TT) and the other is homozygous recessive (tt), all offspring will be heterozygous (Tt). In a cross between TT and tt, the gametes from TT are all T and from tt are all t. Combining them results in Tt offspring only. For other combinations like Tt and tt, Tt and Tt, tt and tt, they won't produce 100% heterozygous offspring.
Answer:
D. TT * tt