Which of the following statements are correct for fertilization?

(i) The motile sperms swim rapidly enter into the uterus after insemination and finally reach fallopian tube.

(ii) Fertilization only occurs at the ampullary-isthmic junction.

(iii) During fertilization, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms.

(iv) The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum and induce the completion of the meiotic division of the secondary oocyte.

(v) Scientifically it is correct to say that the sex of the baby is determined by the father and not by the mother.