Statement S. After implantation, the uterine endometrium undergoes changes to become decidus
Reason R. the placenta in described as deciduous type Correct answer is
A. Both S and R are true but R is not correct explanation to S.
B. B is correct but R is not correct
C. S is not correct but R is not correct
D. Both S and R are true and R is a correct explanation to S.