Researcher a Studied the Effect of Mood on Volunteering by Using

Researcher A studied the effect of mood on volunteering by using college students and a paper-based mood-induction where participants write a 10 minute essay on a personal event where that made them extremely happy (sad) . In a subsequent study, Researcher B used the same procedures as Researcher A, but recruited middle-aged adults as participants. Researcher B's study would be considered a(n) __________ of Researcher A's study.

A) conceptual replication
B) exact replication
C) robust replication
D) methodological replication