DNA is considered the blueprint of life, yet in eukaryotic organisms such as humans, it never leaves the nucleus. Which of the following is the BEST explanation for how DNA provides the code for protein synthesis in the cytoplasm?

Inside the nucleus, DNA is translated into mRNA, which then leaves the nucleus before being transcribed into proteins.
The DNA in the nucleus is transcribed into mRNA, which then leaves the nucleus and be translated into proteins at the ribosome.
The DNA in the nucleus is translated into proteins, which then leave the nucleus and enter the cytoplasm where transcription of mRNA can occur.
Under the right conditions, DNA is converted into tRNA, which then leaves the nucleus and is translated into proteins.