<prompt> Cervical mucus has following properties except:High oestrogen levels at midcycle make cervical mucus thickEstrogen primed cervical mucus filters out non-sperm components of semenMidcycle mucus creates a reservoir for spermElevated oestrogen levels near ovulation increases sodium chloride concentration  <response>: High oestrogen levels at midcycle make cervical mucus thin and stretchy responsible for ferning pattern. 