微软笔试题的问题
11、The Orchid Pavilion(兰亭集序) is well known as the top of “行书”in history of Chinese literature. The most fascinating sentence is "Well I know it is a lie to say that life and death is the same thing, and that longevity and early death make no difference Alas!"(固知一死生为虚诞，齐彭殇为妄作).By counting the characters of the whole content (in Chinese version),the result should be 391(including punctuation). For these characters written to a text file,please select the possible file size without any data corrupt.
A、782 bytes in UTF-16 encoding
B、784 bytes in UTF-16 encoding
C、1173 bytes in UTF-8 encoding
D、1176 bytes in UTF-8 encoding
E、None of above

请问这道题是考察什么的？正确答案是什么？为什么？
请帮忙解答下！多谢了！O(∩_∩)O~
[解决办法]
B、784 bytes in UTF-16 encoding