At Human Body Temperature (37°C),cholesterol in Membranes Functions to

At human body temperature (37°C) ,cholesterol in membranes functions to

A) make the membrane less fluid by restricting the movement of phospholipids.
B) make the membrane more fluid by stimulating the movement of phospholipids.
C) facilitate cell-cell interactions by binding to receptors on neighboring cells.
D) make the membrane more fluid by crowding integral membrane proteins into restricted areas.