You want to create a graph with nodes 'A', 'B', and 'C' where 'A' connects to 'B' and 'B' connects to 'C'. Which code correctly sets this up?

hard📝 Application Q8 of 15

LangChain - LangGraph for Stateful Agents

AnodeA = Node('A') nodeB = Node('B') nodeC = Node('C') edge1 = Edge(nodeA, nodeB) edge2 = Edge(nodeB, nodeC)

BnodeA = Node('A') nodeB = Node('B') nodeC = Node('C') edge1 = Edge(nodeB, nodeA) edge2 = Edge(nodeC, nodeB)

CnodeA = Node('A') nodeB = Node('B') nodeC = Node('C') edge1 = Edge(nodeC, nodeB) edge2 = Edge(nodeB, nodeA)

DnodeA = Node('A') nodeB = Node('B') nodeC = Node('C') edge1 = Edge(nodeA, nodeC) edge2 = Edge(nodeC, nodeB)

Step-by-Step Solution

Solution:

Step 1: Identify the required connections
'A' connects to 'B' and 'B' connects to 'C' means edges from A to B and B to C.
Step 2: Match code that creates these edges
nodeA = Node('A') nodeB = Node('B') nodeC = Node('C') edge1 = Edge(nodeA, nodeB) edge2 = Edge(nodeB, nodeC) creates edges Edge(nodeA, nodeB) and Edge(nodeB, nodeC) correctly.
Final Answer:
nodeA = Node('A') nodeB = Node('B') nodeC = Node('C') edge1 = Edge(nodeA, nodeB) edge2 = Edge(nodeB, nodeC) -> Option A
Quick Check:
Edges match connections [OK]

Quick Trick: Edge(start, end) follows connection direction [OK]

Common Mistakes:

MISTAKES

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