<｜begin▁of▁sentence｜>### Instruction:
In the intricate study of cellular lineages akin to the way a histologist examines the interconnections of tissue samples, imagine we are scrutinizing a lineage graph of cells where the relationships are serialized as 'Cell_A->Cell_B->Cell_C->Cell_D'. With this data structure, can you identify all progenitor cells that eventually led to the emergence of 'Cell_C'? This lineage information is vital for understanding the developmental pathway that culminates in 'Cell_C'.
### Response:
import networkx as nx

# Create a directed graph
DG = nx.DiGraph()

# Add edges (implicit adding of nodes)
DG.add_edge('A', 'B')
DG.add_edge('B', 'C')
DG.add_edge('C', 'D')

# Get the ancestors of node 'C'
ancestors_C = nx.ancestors(DG, 'C')

# Display sorted list of ancestors of node 'C'
print(sorted(ancestors_C))
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