If Cells of an Individual Contain the Same Set of Genes

Multiple Choice

If cells of an individual contain the same set of genes, how do these cells become different from each other during development?

A) Different cell type-specific regulatory elements in DNA are created during development.
B) Different cell type-specific regulatory elements in DNA are selectively lost during development.
C) Differences in extracellular signals received by each cell lead to differences in the types of regulatory proteins present in each cell.
D) Differences develop in promoter sequences that lead to different signals being produced by each type of cell.