A survey（调查）about the activity Helping the Homeless Children was made in Lucy and Lily's class．They and their 48 classmates took an active part in this activity．According to the form below，     students gave away school things．（　　）

Students	Girls （clothes）	Girls （school things）	Boys （clothes）	Boys （school things）
Percentage（百分比） of the whole class	28%	20%	22%

A．

24

B．

15

C．

25