An experiment was conducted to test the effect of a new stain remover. Twenty stains were treated with stain remover A and stain remover B for a week, then the number of stains removed was measured. A significance test was conducted at the α = 0.10 level for the mean difference in the number of stains removed between stain remover A and stain remover B. The test resulted in t = 1.37 and p = 0.17. If the alternative hypothesis in question is Ha: μA − μB ≠ 0, where μA equals the mean number of stains removed with stain remover A and μB equals the mean number of stains removed with stain remover B, what conclusion can be drawn?

A. There is a significant difference in the mean effectiveness of two stain removers.
B. There is sufficient evidence that stain remover A works better than stain remover B.
C. The proportion of stains that stain remover A removed is greater than the proportion of stains removed by stain remover B
D. There is insufficient evidence that the proportion of stains removed by stain remover A and stain remover B is different.
E. There is insufficient evidence that there is a difference in the mean effectiveness of stain remover A and the mean effectiveness of stain remover B