What is the answer to the difference as I have already figured out the null and alternative hypothesis this is a homework question i am having trouble with

Researchers wanted to compare the effectiveness of a water softener used with a ltering process to that of a water softener used without filtering. Ninety locations were randomly divided into two groups of equal size. Group A locations used a water softener and the filtering process, while group B used only the water softener. At the end of three months water samples were tested at each location for softness level. (Water softness was measured on a scale of 1 to 5, with 5 being the softest water.) The results were as follows. Group A (water softener and ltering) x1 = 2.1 51 = 0.7 Group B (water softener only) x2 = 1.7 $2 = 0.4 Using a 1% signicance level, determine whether there is a difference between the two types of treatments. H0=P1-P2=9 Ha=P1\"l-12*0 Test statistic t= 3.328, Pvalue= 0.0014, DF= 69.97 A) Since the Pvalue IS less than 0 -01 we are unable to reject the null hypothesis; there' IS insufcient evidence to conclude that there IS a difference in the softness level achieved by the two processes. B) Since the P-value is less than 0.01, we reject the alternative hypothesis and conclude that there is no signicant difference in the softness level achieved by the two processes. C) Cannot draw a conclusion from the information given. D) Since the Pvalue is less than 0.01, we accept the null hypothesis and conclude that there is no difference in the softness level achieved from the two processes. E) Since the Pvalue is less than 0.01, we reject the null hypothesis and conclude that there is a difference in the softness level achieved by the two processes