Recall the case in which an employee claimed harassment by her supervisor in which he altered her work hours with the knowledge that doing so would adversely affect her hypoglycaemia, frequently stood at her desk and stared angrily at her; startled her by pounding on her desk with his fist; criticized her work unfairly; and yelled at her in front of co-workers. In that case, the court ruled that-
a. no sexual harassment was proven because no demand for sexual favours was made.
b. no sexual harassment was proven because no hostile environment was created.
c. a hostile environment was created by the supervisors conduct.
d. no harassment could be proven without verbal or physical conduct of a sexual nature.