To test the age old question if talking to plants helps them grow, horticulturists obtained 24 heirloom tomatoes. From each tomato, two seeds are selected. One of the two seeds is randomly chosen to be in the "conversation" group, the other in the "control" group. Everything about how the tomato seeds were grown was exactly the same (same amount of water, same soil type, etc. ) except the seeds chosen to be in the "conversation" group were spoken to for 3 hours a day. After 6 weeks, the height of all resulting tomato plants was measured in inches. The mean difference in the height of the plants between the conversion and control groups is 7.26 inches with a standard deviation of 9.61 inches.

Based on the t-test statistic and p-value, researchers found moderate evidence against the null hypothesis. Give the final statement of the hypothesis test.

a. There is not enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is greater than 0.
b. There is enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is greater than 0.
c. There is enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is 0.
d. There is not enough evidence to conclude the mean difference in the height of the plants between the conversion and control groups is 0.