Task: Question Answering
Input (English): Question: Which of the following actions is NOT specific to prolactin? 
 Options:  <1> It favors the renal retention of water and salt. <2> It favors the corpus luteum. <3> Stimulates milk production <4> Stimulates the hypothalamic secretion of the gonadotrophin releasing hormone. <5> Participates in the control of spermatogenesis.
Output (English): 4