选择题
2017 AMC 8 Problem 20: Odd Four-Digit Number
An integer between 1000 and 9999, inclusive, is chosen at random. What is the probability that it is an odd integer whose digits are all distinct?
2017 AMC 8 第20题 ：奇数四位数
随机选择1000到9999 （含）之间的整数。它是一个数字都截然不同的奇数整数的概率是多少？
A.
14/75
B.
56/225
C.
107/400
D.
7/25
E.
9/25