When doing the randomization check for the RocketFuel case, we compared the average number of impressions of the treatment group to the average number of impressions of the control group using an independent sample t test. If the p value (two-tail) of this independent sample t test was 0.01, what conclusion would you draw?

A: The TaskaBella advertising campaign was not profitable.

B: The TaskaBella advertising campaign was profitable.

C: This experiment was valid.

D: This experiment was not valid.