Question: 27
(Choose 1 answer)
In a directed graph represented using an adjacency matrix, what does a value of 1 at matrix entry M[i][j] mean?
A. There is an edge from vertex i to vertex j.
B. There is an edge from vertex j to vertex i.
C. There is no edge between vertex i and vertex j.
D. The graph is undirected.
E. There is a self-loop at vertex i.
F. There is a weighted edge from vertex j to vertex i.
