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Read the following statements carefully ...

Read the following statements carefully and select the correct statements.
(i) hPL plays a major role in parturition.
(ii) Fetus shows movements first time in the `7^(th)` months of pregenancy.
(iii) Signal for parturition comes from fully developed fetus and placenta.
(iv) Embryo's hearth is formed by the `3^(rd)` month of pregency.

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