Answer: Option 'B' is correct.
Step-by-step explanation:
All the iron molecules that are in your body were originally created by a star.
During a star supernova, a very large amount of energy and neutrons are released by stars which allows heavier elements to be produced.
And when there is explosion of star occurs, those elements are found which is used to make DNA and DNA contains large amount of iron molecules.
Hence, Option 'B' is correct.