Which food handler is avoiding cross-contamination while prepping?

A.
Amita uses a single blue cutting board to cut up, chop, or trim different kinds of food.
B.
Akira makes sure to rinse and sanitize work surfaces after completing all his tasks.
C.
After cutting chicken, Jason starts chopping vegetables on the prep table with the same knife.
D.
After slicing squid, Maya washes, rinses, and sanitizes the knife and cutting board she used.