Why Would a Cognitive Neuroscience Approach Be Potentially More Difficult

Why would a cognitive neuroscience approach be potentially more difficult to use when studying children?

A) Neuroimaging devices can be loud and frightening, and require children to sit still for extended periods.
B) Children's brains are not sufficiently organized to draw conclusions from neuroimaging techniques.
C) Neuroimaging devices are often not able to correctly scan smaller brains.
D) Children are more vulnerable to small doses of radiation produced by neuroimaging devices.