单选题：Given 4 cases of frequences of four characters. In which case(s)

Given 4 cases of frequences of four characters. In which case(s) that the total bits taken by Huffman codes are the same as that of the ordinary equal length codes? @[A](3)

- (1) 1 2 2 3
- (2) 1 1 1 2
- (3) 2 2 3 5
- (4) 1 2 3 4

A. (1) and (2)
B. (3) only
C. (1), (2) and (4)
D. (2) only




A.(1) and (2)
B.(3) only
C.(1), (2) and (4)
D.(2) only


答案：A