问题
单项选择题
When the adjacency matrix method is used to store a graph, which of the statements is (are) true ( ) Ⅰ．the space required depends on the number of vertices Ⅱ．the apace required depends on the number of edges
A．None
B．Ⅰ only
C．Ⅱ only
D．Ⅰ and Ⅱ
答案
参考答案：B