"too"同"either"

He should say 'me too'.
Why?
It is because the answer of B is the same as A.
The meaning of too means the two objects are the same.
Therefore, the result of answering'too' have to be A.
Either means one of the objects.
In this case, if you say me rither.
That means this phase here is meaningless.
The people who hearing you will not know that your answer is A or B.
The result could be A or B.

ME TOO

由於 a 的回答是 "Negative"，這句子根本不是否定 (negative) 句，意思只是 "The answer I found is less than zero (negative)"，並沒有否定的意思，所以 b 可以回應

me too 或 so do I

但是，如果 a 說 "I can't find the answer"，b 就可以回應

me too 或 me neither 或 I can't either

BBC 的網站有詳細分析了too, so, either 及 neither 的用法，請參考：
http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/learnitv166.shtml

哈哈！
個日傾計講開me too"定"me either

根住我就翻查字典：
me too:
仿效、追隨的意思;一樣
me either：

查唔到

如果只是either

1. (兩者之中)任一的

2. (兩者之中)每一方的;每一的



3. (兩者之中)任何一個

4. (通常與or連用)或者

5. (用在否定句中)也,而且;根本

是用於否定句
並不是負數
所以用me too才是正確的！

me too,如果佢廣啲係負面的東西先用me either
例如：I don't like to eat ice-cream.
就要答Me either.

應該就系答' me too'
我吾太sure..