DrOswald Conducts a Study Examining the Relationship Between the Number

Dr.Oswald conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction.She randomly samples 1,500 elderly men and women in the Memphis,Tennessee,area in the southern United States.Below are her findings.
-Life satisfaction and experience of daily stress: r = -.57 ( p = .01)
-Number of friends one has and experience of daily stress: r = .09,not sig.
-Number of friends one has and life satisfaction: r = .36 ( p = .04)

-Considering Dr.Oswald's sample,which of the following statements is true?

A) The association found in her study could probably generalize to teenagers.
B) The association found in her study could probably generalize to elderly people in other large cities in Tennessee.
C) The association found in her study could probably generalize to people in New York City.
D) The association found in her study could probably generalize to elderly persons living in nursing homes.