The Modern Era of Stress Research Began

The modern era of stress research began:

A) when Julian Rotter published a monograph reporting the ways in which an internal or external locus of control influences a person's health.
B) when Susan Staples provided research evidence documenting the human response to environmental noise.
C) when J. G. Courtney found that chronic work-related stresses were linked to colon and rectal cancers.
D) when Hans Selye published a book detailing the ways in which heat, cold, pain, toxins, and danger