From a University Population, Random Samples of 45 Seniors and 37

Multiple Choice

From a university population, random samples of 45 seniors and 37 freshmen have been given a scale that measures sexual experiences. The freshmen report an average of 1.6 sexual partners over their lifetimes while seniors report an average of 2.5 partners. The t (obtained) for this difference was -3.56 while the t (critical) was $\pm$ 2.34. What can be concluded?

A) there is no significant difference between the classes
B) seniors and freshman are significantly different in their sexual experiences
C) freshman are more sexually active
D) sexual mores are deteriorating