Consider the Following Scenarios

Consider the following scenarios.Which person displays characteristic signs of a persistent vegetative state?

A) Brian is in a persistent state of unconsciousness;he cannot be awakened and does not respond to painful stimuli.
B) Sienna is learning to walk after her automobile accident;however,she still cannot communicate and suffers significant cognitive impairment.
C) Anil is in a coma;his mother is hopeful because he occasionally opens his eyes and sometimes even smiles or cries,but Anil's doctors tell her that these actions are random.
D) Muriel was in a deep coma;she now squeezes her mother's hand when she hears her voice,but she cannot open her eyes or speak.