since UPSC has combined the preliminary exam of civil services and forest services, so few such odd questions are expected. There is no need to lose sleep, if you can't solve it. But let's do it: NCERT Class 12 Biology Chapter 6: "Molecular Basis of Inheritance". It explains the benefits of human genome sequencing that - "It is the sequence of bases in DNA that determines the genetic information of a given organism. So, learning about the DNA sequences can lead to an understanding of their natural capabilities that can be applied toward solving challenges in health care, agriculture, energy production, environmental remediation." So on that logic, statement 1 and 3 should be possible, and if 1 and 3 are possible then statement 2 ought to be possible as well! So answer D - all three statements are correct.Searching academic papers on Google Scholar engineer confirms that D is the answer.