Assertion: The genes encoding resistance to antibiotices are considered as useful selectable markers for E.coli
Reason :The normal E.coli does not carry resistance against any of the antibiotics
A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion
B. It both Assertion & Reason are True but Reason is not a correct explanation of the Assetion
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false
