Three basic steps are required for making GMO are 
I. Identification of DNA with a desirable gene.
II. Introduction of identified DNA into the host.
III. Maintenance of introduced DNA in the host and transfer of the DNA to progeny.
What is the correct sequence of involvement?
 

• A

  II → I → III

• B

  I → III → II

• C

  II → III → I

• D

  I → II → III