Shar always laughs hysterically whenever she remembers her father's fatal car accident, but she boils with rage when she hears a love song on the radio. Which option best explains her behavior?
A. Shar has schizophrenia and often reacts to situations in unexpected ways to get attention.
B. Shar has schizophrenia and displays emotions that are inappropriate for different situations.
C. Shar has dissociative identity disorder, and her alternate personalities are controlling her emotions.
D. Shar has dissociative identity disorder, and outbursts are an attempt to activate her alternate personalities.