Judging from the Actions of the Children Below, Which Child

Judging from the actions of the children below, which child is most likely a newborn?

A) Arman, who reflexively throws his hands up when startled
B) Katelyn, who picks up small objects with her thumb and forefinger
C) Louise, who smiles when she wants attention from a caregiver
D) Jordan, who kicks a toy to make it play music