A Morning Cortisol Level of ______ Is Normal and Usually

A morning cortisol level of ______ is normal and usually excludes Cushing's syndrome, but a level of ______ indicates hypercortisolism.

A) <30 nmol/L, >150 nmol/L
B) <40 nmol/L, >200 nmol/L
C) <50 nmol/L, >280 nmol/L
D) <60 nmol/L, >300 nmol/L