Thermoplastics are easy to recycle since they can be melted and reshaped into other products. These types of polymers are formed by reorientation of labile bonds, e.g. a pi-bond. Ziegler-Natta catalyzed polymers are poly α-olefins. Being thermoplastic in nature these types of polymers are also easily recyclable. Thermosetting polymers, on the other hand, undergo a chemical change when they are heated, creating a three-dimensional network and associated with the loss of a small molecule with the progress of polymerization. After they are heated and formed, these molecules cannot be re-heated and re-formed. Recycling of these polymers is nearly impossible. Hence the answer is both A and B here.