A cell is grown in a medium with radioactive amino acids for five minutes. The radioactive amino acids are able to be transported into the cell and assimilated into the proteins that are being assembled. After the cells are removed from the radioactive culture, the level of radioactivity is monitored at different time points. It is found that the area of the cell with the highest radioactivity after five minutes is the ribosomes on the rough endoplasmic reticulum. As time progresses, which statement best explains where the level of radioactivity will be highest in the next five minutes?

A) The radioactivity will be highest in the mitochondria, as the proteins made by the cell will need to be modified using ATP.
Eliminate
B) The radioactivity will be highest in the nucleus as the proteins made at the ribosome will be shipped to the nucleus to replicate the DNA.
C) The radioactivity will be the highest outside of the cell because the endoplasmic reticulum transports proteins directly to and through the cell membrane.
D) The radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.