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答案：
A
一个数是
M这个三位数三个位上的数字的乘积是96，而M是奇数，那么个位数一定是3，否则：1.若个位数不是3，那么96没有其他的奇数因子（当某一位是1时，其他两个乘数项肯定大于9，不构成两位数）2.若3不在个位，那么M就不是奇数。
根据这个推理过程，条件二就一定不充分了，因为至少存在个位数和十位数互换的两种情况，而题目问的是What is 是问唯一值，因此存在多种情况必不能回答，条件二不充分。
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