According to Research, What Is the Most Appropriate Way to Handle

According to research, what is the most appropriate way to handle preterm babies?

A) Current thinking is to handle them as little as possible.
B) They should be handled sparingly for the first two weeks of life.
C) Research now shows that preterm infants benefit from stimulation such as cuddling and rocking.
D) Research now shows that how preterm babies are handled has little impact on their development.