<prompt> During this phenomenon arrow mark, changes in hormone levels noted are,Increased estrogen, increased progesteroneDecreased estrogen, increased progesteroneDecreased estrogen, decreased progesteroneIncreased estrogen, decreased progesterone  <response>: Ans. d Increased estrogen, decreased progesteroneRef: Ganong, 25th edp.403LH surge happen 24 - 36 hrs before ovulationAt that time, there is increased estrogen, decreased progesterone. 