Assertion (A): The endometrium undergoes cyclical changes during the menstrual cycle.
Reason (R): The endometrium is the layer of the uterus responsible for strong contractions during childbirth.
In the light of above statements, choose the correct answer:
1
Both A and R are true and R is the correct explanation of A.
2
Both A and R are true, but R is not the correct explanation of A.
3
A is true, but R is false.
4
A is false, but R is true