When Using Normal Saline for Bronchoalveolar Lavage,what Is the Maximum

When using normal saline for bronchoalveolar lavage,what is the maximum amount of normal saline per kg that should be used?

A) 1 mL/kg per aliquot
B) 1 mL/kg total
C) 2 ml/kg per lung
D) 2 mL/kg total