Task: Question Answering
Input (English): Question: Childhood disintegrative disorder is characterized by: 
 Options:  <1> A seemingly normal development during at least the first two years of life. <2> Present only in the female sex. <3> Do not affect the intellectual capacity of people who suffer from it. <4> Does not affect the communication skills of the person. <5> A developmental delay evident from birth.
Output (English): 1