Go through the following statement
(i) Relaxin produced by the ovary, facilitates delivery of the foetus by softening the connective tissue of pubic symphysis and relaxing the pelvic ligaments and joints.
(ii) By the end of fifth month of pregnancy, the foetus develops limbs and digits.
(iii) Thalidomide is a teratogenic drug which causes a condition called phocomelia.
(iv). Although the levels of prolactin are high during pregnancy, milk secretion does not occur because of the high oestrogen and progesterone levels which make the breast unresponsive to the prolactin.
Which of these are correct?

Options

A. `i`,ii and iii
B. `i`, iii and iv
C. ii, iii and iv
D. all are correct

Answer

B

Explanation

Foetus develops limbs and digits by the end of second month.