一组包含不同权的字母已经对应好Huffman编码，如果某一个字母对应编码001,下面说法正确的有 A group of letters with different weights has corresponded with Huffman codes, if a letter’s corresponding code is 001, which sentences of the followings are right:
A、以001开头的编码不可能对应其他字母。A code beginning with 001 couldn’t correspond with other letters.
B、以000开头的编码不可能对应任何字母。Codes beginning with 000 couldn’t correspond with any letter.
C、以01开头和1开头的编码肯定对应某个字母。Codes beginning with 01 or 1 must correspongding with some letters.
D、建好的Huffman树至少包含4个叶结点。The Huffman tree contains at least 4 leaf nodes.
E、编码0和00可能对应于其他字母。Code 0 and 00 could corresponding with other letters.