A: PVC, a thermosetting plastic, used for making electrical switches and handles of various Utensils
R: Thermosetting plastics when moulded once cannot be softened by heating
(a) A & R are CORRECT; R is CORRECT explanation for A
(b) A & R are CORRECT; But, R is not-CORRECT explanation for A
(c) A is CORRECT; But not R
(d) R is CORRECT; But not A