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? @[B](3)

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

A. (3) only
B. (3) and (4)
C. (1), (2) and (4)
D. None




A.(3) only
B.(3) and (4)
C.(1), (2) and (4)
D.None


答案：B