Correct Option: C

Photosensitive Polyethylene glycol dimethy-lacrylate is used in free radical copolymer crosslinking reactions which cross links enzyme with matrix and hence used in immobilzation of enzymes. Polyvinyl alcohol is used for formation of spherical structured beads in immobilisation process but after the process is over it needs to be degraded and for this purpose gamma radiation induced degradation of polyvinyl alcohol is carried out.