Professor Rumpler found a relationship between age at marriage and marital happiness. Rumpler ...

Professor Rumpler found a relationship between age at marriage and marital happiness. Rumpler introduced sex, race, number of years married, and income as test variables. In all partials, the relationship between age at marriage and marital happiness held. Rumpler probably
 
  a. concluded that the relationship between age and marital happiness was most likely a genuine one.
  b. decided that replication had increased his confidence that there was a relationship between age and marital happiness.
  c. now knew why age and marital happiness were related.
  d. decided that it was a spurious relationship between age and marital happiness.
  e. concluded that the relationship between age and marital happiness was most likely a genuine one and that replication increased his confidence that there was a relationship between age and marital happiness.