单选题：Which of the following is true?

Which of the following is true?


@[A](2)

A. Prim's algorithm initialises with a vertex
B. Prim's algorithm initialises with a edge
C. Prim's algorithm initialises with a vertex which has smallest edge
D. Prim's algorithm initialises with a forest



A.Prim's algorithm initialises with a vertex
B.Prim's algorithm initialises with a edge
C.Prim's algorithm initialises with a vertex which has smallest edge
D.Prim's algorithm initialises with a forest


答案：A