DNA, which is contained in the nuclei of cells, is the genetic information that carries the instructions for making proteins. Protein synthesis is divided into two phases - transcription and translation. During transcription, the information encoded in the DNA is transferred to a messenger molecule, mRNA, while in the nucleus. Then, the mRNA travels into the cell's cytoplasm where it is translated into a protein molecule. Some types of cells require synthesis of large quantities of protein. These cells contain multiple nuclei to speed the synthesis process. Which of the following would most benefit from having multiple nuclei? A. kidney cells B. red blood cells C. lung cells D. skeletal muscle cells