47. Which of the children described below is most likely to exhibit characteristics of obsessive-compulsive disorder? (A) Keven struggles with understanding nonverbal communication, such as body language, facial expressions, and tone of voice. (B) Mary has simple vocal tics including throat clearing, grunting, sniffing, or coughing. (C) David has difficulty with sustained attention and engages in constant movement, such as fidgeting, tapping their feet, or squirming in their seats. (D) Lucy engages in excessive handwashing, cleaning, or sanitizing behaviors due to a fear of contamination.