How Does Position Effect Influence Gene Expression

How does position effect influence gene expression?

A) The movement of the genetic material on the chromosome by inversions or translocations may place a coding sequence near a new regulatory region, thus activating the expression of the gene.
B) The movement of the gene may place it into a region that is highly condensed.
C) The movement of a gene may remove it from its normal promoter, thus silencing the gene.
D) All of the answers are correct.