問題文
A bank is building a system that answers analyst questions about a portfolio by consulting three internal sources: a positions database, a research note archive, and a market-data service. An architect proposes a coordinator agent with three subagents, one per source. Which division of responsibility makes this design sound?
選択肢
- The coordinator performs all data access itself and uses subagents only to rephrase the final answer.
- Each subagent holds credentials for all three sources so that any subagent can answer any question if another one fails.
- Subagents call one another directly in a chain, and the coordinator only starts the first one.
- The coordinator decides which sources are needed and reconciles their results; each subagent owns access to exactly one source and returns findings with their provenance.