Material A[]
Plastic #1 or #2.
Appropriate disposal: Recycling.
Material B[]
Other Plastic.
Appropriate disposal: Garbage Bin.
Contains harmful chemicals and therefore, cannot be recycled.
Plastic Food Storage Containers
Best Alternative[]
Use reusable glassware.
Special Note: Avoid reheating food in a plastic container as it may leach harmful chemicals into your food.
http://www.keeptruckeegreen.org/guide/plastic-food-storage-containers/