Deletion of a region led to over expression of a gene X. What do you conclude from this observation?

Q. Deletion of a region led to over expression of a gene X. What do you conclude from this observation?

A.            Regulator of gene X is deleted

B.            No effect on gene X or its regulators

C.            Part of gene X is mutated

D.            Promoter of gene X is deleted

Answer: Regulator of gene X is deleted