In the following Python code snippet, what is the purpose of the `skip_special_tokens=True` argument?
```python
from transformers import RagTokenizer, RagTokenForGeneration
tokenizer = RagTokenizer.from_pretrained("facebook/rag-token-base")
generator = RagTokenForGeneration.from_pretrained("facebook/rag-token-base")
input_ids = tokenizer.encode("What is the capital of France?", return_tensors="pt")
generated = generator.generate(input_ids=input_ids)
print(tokenizer.decode(generated[0], skip_special_tokens=True))
```
a. Skips tokenization of special characters.
b. Skips the generation of special tokens
c. Skips the decoding of special tokens.
