Consider the following statements about haemoglobin and select the correct answer from the code even below:

1. It contains iron
2. It imparts red colour to the blood
3. It provides immunity against certain diseases
4. It is a carrier of oxygen in blood

Code:

A) 1, 2 and 3

B) 2, 3 and 4

C) 1, 2 and 4

D) 1, 2, 3 and 4

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2003 (GS Paper I)