We asked John and Jerry, but of them could offer a satisfactory explanation.
A. either
B. none
C. both
D. neither
网友回答
A. either
B. none
C. both
(答案→)D. neither
解析：考察代词。根据上文的John and Jerry可知是两个人，排除B项，none指代三者或三者以上。在根据but可知上下文是转折关系，那么应该是两者都不能提供满意的答案。故D正确。