Diphragms are contraceptive devices used by the females. Choose the correct optin from the statements given below :
(i) They are introduced into the uterus
(ii) They are placed to cover the cervical region
(iii) They act as physical barriers for sperm entry
(iv) They act as sperimicidal agents

Options

A. (i) and (ii)
B. (i) and (iii)
C. (ii) and (iii)
D. (iii) and (iv)

Answer

C