**Core Concept**
Stop codons are sequences of three nucleotides (codons) in messenger RNA (mRNA) that signal the termination of protein synthesis during translation. They are crucial for ensuring that proteins are synthesized with the correct length and accuracy.

**Why the Correct Answer is Right**
The three stop codons in the standard genetic code are UAA, UAG, and UGA. These codons are recognized by release factors, which bind to the ribosome and trigger the dissociation of the ribosomal subunits, releasing the completed protein. The stop codons do not code for any amino acid and are instead used as a signal to terminate protein synthesis. The termination process is mediated by the release factors, which recognize the stop codons and facilitate the release of the completed protein.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not specified, so we'll move on to the next one.
**Option B:**
**Option C:**
**Option D:**

**Clinical Pearl / High-Yield Fact**
It's essential to remember that stop codons are not translated into any amino acid and are instead used as a signal to terminate protein synthesis. This is a critical aspect of protein synthesis, and understanding the role of stop codons is crucial for grasping the process of translation.

**Correct Answer:** UAA, UAG, and UGA.