Chromatin Remodeling Refers to the Process by Which

Chromatin remodeling refers to the process by which:

A) nucleosomes are repositioned to expose different stretches of DNA to the nuclear environment.
B) DNA strands are "straightened out" to allow access to the proteins that carry out transcription.
C) DNA strands are "unzipped" to allow access to the proteins that carry out transcription.
D) methylation occurs in CpG islands.
E) mutations change DNA structure and therefore chromatin structure.