The correct option is D PS - Code 4
Recycling codes are used to identify the material from which a particular substance is made. This is done to make the process of recycling easier. The number in the recycling code shows that the type of plastic from which that substance is made.
NumberType of plastic1Polyethylene Terephtalate (PET, PETE)2High Density Polyethylene (HDPE)3Polyvinyl Chloride (PVC)4Low Density Polyethylene (LDPE)5Polypropylene (PP)6Polystyrene (PS)7Others