Match List-I with List-II.

	List-I Polymer		List-II Type/Class
A.	Nylon-2-Nylon-6	I.	Thermosetting polymer
B.	Buna-N	II.	Biodegradable polymer
C.	Ureaformaldehyde resin	III.	Synthetic rubber
D.	Dacron	IV.	Polyester

Choose the correct answer from the options given below:

Matching polymers with their types:

A. Nylon-2-Nylon-6: This is a biodegradable polymer (II) - a copolymer of glycine and aminocaproic acid.

B. Buna-N: This is a synthetic rubber (III) - a copolymer of butadiene and acrylonitrile.

C. Urea-formaldehyde resin: This is a thermosetting polymer (I) - once set, cannot be remolded.

D. Dacron: This is a polyester (IV) - polyethylene terephthalate (PET).

Matching: A-II, B-III, C-I, D-IV

The correct answer is Option 2.