Renee has just completed her experiment for biology lab and cleaned up her lab area. The bell rings for her to go to her next class. What should Renee do before she leaves the laboratory?

A.
put on her safety goggles and lab coat
B.
wash her hands thoroughly with soap and water
C.
put all chemical waste bottles in the trash can
D.
tie back her hair if it is longer than shoulder-length

B. wash her hands thoroughly with soap and water