in pica disorder, the MOST appropriate statement is

(D). Pica involves the persistent eating of non-nutritive, non-food substances (e.g., paper, soap,plaster,charcoal,clay,wool, ashes,paint, earth) over a period of at least 1 mo. The eating behavior is inappropriate to the developmental level (e.g., the normal mouthing and tasting of objects in infants and toddlers) and, therefore, a minimum age of 2 yr is suggested. Children with pica are at increased risk for lead poisoning; iron-deficiency anemia; mechanical bowel problems, intestinal obstruction, intestinal perforations, dental injury, and parasitic infections. It can be fatal but usually based on substances ingested.