When planning care for a 7-year-old boy with Down syndrome, the nurse should

A．plan interventions at the developmental level of a 7-year-old child because that is the child's age.

B．plan interventions at the developmental level of a 5-year-old because the child will have developmental delays.

C．assess the child's current developmental level and plan care accordingly.

D．direct all teaching to the parents because the child can't understand.

某商品流通企业某种商品前11个月的实际销售量如下表所示：

A．340
B．396
C．440
D．460