Here's a problem to solve: In biology class, a student places a tissue specimen on a glass microscope slide. The student drops the slide, and the slide shatters. What procedure should the student follow first?

Among the 4 following options, which is the correct answer?

- A: attempt to collect the specimen from the slide pieces
 
- B: pick up the larger pieces of the slide
 
- C: use a broom to sweep up all glass on the floor
 
- D: inform the teacher of the accident
 