Match List-I with List-II and select the correct answer from the code given below the lists:
List-I (Air Pollutant) - List-II (Part affected)

A. Asbestos dust - 1. Brain
B. Lead - 2. Stomach
C. Mercury - 3. Lung
D. Carbon Monoxide - 4. Blood stream

A B C D

A) 1 2 3 4

B) 3 1 2 4

C) 2 3 4 1

D) 4 3 2 1

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2012 (GS Paper I)