i read about it in some book or other,does it matter --- it

I read about it in some book or other. does it matter what it was?(A)
注：用which不好,因为一般应该说"does it matter which one it was",只用which不通顺.而用what意思相像,但是绝对通顺
getting water is not the least 的意思是其中一个问题就是取水.in another word, getting water is not the only problem.
please tell me how you would like to have your coff, black or white(上面答题的那位终于答对一题)
以我在澳大利亚的7年经验保证答案的准确率.