The nurse uses 30 mL of solution to irrigate a nasogastric tube and notes that 20 mL returns promptly into the drainage container. When the nurse records the results of the irrigation, how much solution should be recorded as intake

A. 10mL.
B. 20mL.
C. 30mL.
D. 50mL.

关于2013年1-5月保险业经营状况，能够从上述资料中推出的是：

A.5月各类险种保费收入均低于4月 

B.4月三个人身险种的收入均高于一季度平均水平 

C.1月人身意外伤害险收入在保费总收入中的占比不足2% 

D.2月各类险种保险赔付支出均低于1月