[Solved] Given the following code snippet, what will be the output type of results? retriever = MultiQueryRetriever.from_llm(vectorstore.as_retriever(), llm) results = retriever.get_relevant_documents("AI") | LangChain

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Given the following code snippet, what will be the output type of results?

retriever = MultiQueryRetriever.from_llm(vectorstore.as_retriever(), llm)
results = retriever.get_relevant_documents("AI")

AA single document matching the first query only

BA list of documents combining results from both queries

CA dictionary with queries as keys and documents as values

DAn error because get_relevant_documents requires no arguments

Step-by-Step Solution

Solution:

Step 1: Understand MultiQueryRetriever behavior
It [uses the LLM to] runs multiple queries and combines their results into a single list of documents.
Step 2: Analyze the method call
Calling get_relevant_documents("AI") triggers retrieval for all [generated] queries, returning combined documents.
Final Answer:
A list of documents combining results from both queries -> Option B
Quick Check:
Multi-query retrieval returns combined document list [OK]

Quick Trick: MultiQueryRetriever returns combined list of documents [OK]

Common Mistakes:

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Given the following code snippet, what will be the output type of results?