Primary amenorrhea is defined as:

A The absence of menarche (the first menstrual period) by age 16 years.
B The absence of menarche (the first menstrual period) by age 18 years.
C Absence of menstruation at any age.
D by age 16 years. b) The absence of menarche (the first menstrual period) by age 18 years. c) Absence of menstruation at any age. d) Failure to menstruate for six months in a female who was previously menstruating.



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