Mendel found that reciprocal crosses yielded identical results. From that he concluded
A cross, with the phenotype of each sex reversed as compared with the original cross, to test the role of parental sex on inheritance pattern is called Reciprocal crosses. Reciprocal cross is made to eliminate the effect of cytoplasmic traits and to know whether the alleles are present on sex chromosomes or autosomes. Mendel found that reciprocal crosses yielded identical results. From that he concluded that, sex has no influence dominance of a trait.
So, the correct option is ‘Sex has no influence on the dominance of the trait’.