一用于食品的化合物需进行三阶段毒理学评价。现已有大、小鼠经口LD₅₀，蓄积试验，Ames试验，代谢试验，致畸试验的结果，还需进行的试验有

A．骨髓细胞微核试验、骨髓细胞染色体畸变试验、睾丸细胞染色体畸变试验、30/90天喂养试验、繁殖试验

B．骨髓细胞微核试验、骨髓细胞染色体畸变试验、精子畸形试验、30/90天喂养试验、致癌试验

C．骨髓细胞微核试验、姐妹染色单体交换试验、睾丸细胞染色体畸变试验、慢性毒性试验、繁殖试验

D．骨髓细胞微核试验、骨髓细胞染色体畸变试验、UDS皮肤黏膜刺激试验、繁殖试验

E．骨髓细胞微核试验、骨髓细胞染色体畸变试验、睾丸细胞染色体畸变试验、30/90天喂养试验、致癌试验

A 2-year-old child is brought to the emergency room with a broken arm. Which of the following findings would lead the nurse to suspect child abuse

A．The child has bruises on the forearms.

B．The child's clothes are dirty, torn, and obviously "hand-me-downs. "

C．The child's father alters the story of the injury each time he tells it.

D．The child's mother did not come to the hospital with the child.