Harry Harlow's Experiments on Rhesus Monkeys Showed That Infants Placed

Harry Harlow's experiments on rhesus monkeys showed that infants placed with artificial surrogate mothers:

A) developed physically and socially the same as those raised with their biological mothers.
B) clung equally to cloth and wire mothers.
C) clung to wire mothers whether the mothers had bottles attached to them or not.
D) lacked basic social skills as adults.